Revert "Use nullptr"

interessant clang-tidy bug... I don't understand how clang-tidy can
create this type of bug.

This reverts commit a97e32dc.

src/alarmtimewidget.cpp

@@ -251,7 +251,7 @@ void AlarmTimeWidget::init(Mode mode, const QString& title)
 void AlarmTimeWidget::setReadOnly(bool ro)
 {
     mAtTimeRadio->setReadOnly(ro);
-    mDateEdit->setOptions(ro ? KDateComboBox::Options(nullptr) : KDateComboBox::EditDate | KDateComboBox::SelectDate | KDateComboBox::DatePicker);
+    mDateEdit->setOptions(ro ? KDateComboBox::Options(0) : KDateComboBox::EditDate | KDateComboBox::SelectDate | KDateComboBox::DatePicker);
     mTimeEdit->setReadOnly(ro);
     if (mAnyTimeCheckBox)
         mAnyTimeCheckBox->setReadOnly(ro);

src/birthdaydlg.cpp

@@ -227,7 +227,7 @@ BirthdayDlg::BirthdayDlg(QWidget* parent)
                       Preferences::defaultSoundVolume(), -1, 0, Preferences::defaultSoundRepeat());
     if (mSpecialActionsButton)
     {
-        KAEvent::ExtraActionOptions opts(nullptr);
+        KAEvent::ExtraActionOptions opts(0);
         if (Preferences::defaultExecPreActionOnDeferral())
             opts |= KAEvent::ExecPreActOnDeferral;
         if (Preferences::defaultCancelOnPreActionError())

src/calendarmigrator.cpp

@@ -143,7 +143,7 @@ bool              CalendarMigrator::mCompleted = false;
 
 CalendarMigrator::CalendarMigrator(QObject* parent)
     : QObject(parent),
-      mExistingAlarmTypes(nullptr)
+      mExistingAlarmTypes(0)
 {
 }
 

src/collectionmodel.cpp

@@ -762,8 +762,8 @@ CalEvent::Types CollectionControlModel::setEnabled(const Collection& collection,
 CalEvent::Types CollectionControlModel::setEnabledStatus(const Collection& collection, CalEvent::Types types, bool inserted)
 {
     qCDebug(KALARM_LOG) << "id:" << collection.id() << ", types=" << types;
-    CalEvent::Types disallowedStdTypes(nullptr);
-    CalEvent::Types stdTypes(nullptr);
+    CalEvent::Types disallowedStdTypes(0);
+    CalEvent::Types stdTypes(0);
 
     // Prevent the enabling of duplicate alarm types if another collection
     // uses the same backend storage.

src/dbushandler.cpp

@@ -475,7 +475,7 @@ KDateTime DBusHandler::convertDateTime(const QString& dateTime, const KDateTime&
 */
 KAEvent::Flags DBusHandler::convertStartFlags(const KDateTime& start, unsigned flags)
 {
-    KAEvent::Flags kaEventFlags = nullptr;
+    KAEvent::Flags kaEventFlags = 0;
     if (flags & REPEAT_AT_LOGIN) kaEventFlags |= KAEvent::REPEAT_AT_LOGIN;
     if (flags & BEEP)            kaEventFlags |= KAEvent::BEEP;
     if (flags & SPEAK)           kaEventFlags |= KAEvent::SPEAK;

src/editdlg.cpp

@@ -859,7 +859,7 @@ void EditAlarmDlg::setEvent(KAEvent& event, const QString& text, bool trial)
 */
 KAEvent::Flags EditAlarmDlg::getAlarmFlags() const
 {
-    KAEvent::Flags flags(nullptr);
+    KAEvent::Flags flags(0);
     if (mShowInKorganizer && mShowInKorganizer->isEnabled() && mShowInKorganizer->isChecked())
         flags |= KAEvent::COPY_KORGANIZER;
     if (mRecurrenceEdit->repeatType() == RecurrenceEdit::AT_LOGIN)

src/prefdlg.cpp

@@ -1466,7 +1466,7 @@ void EditPrefTab::restore(bool, bool allTabs)
             case TimePeriod::Minutes:      index = 0; break;
         }
         mReminderUnits->setCurrentIndex(index);
-        KAEvent::ExtraActionOptions opts(nullptr);
+        KAEvent::ExtraActionOptions opts(0);
         if (Preferences::defaultExecPreActionOnDeferral())
             opts |= KAEvent::ExecPreActOnDeferral;
         if (Preferences::defaultCancelOnPreActionError())

src/recurrenceedit.cpp

@@ -276,7 +276,7 @@ RecurrenceEdit::RecurrenceEdit(bool readOnly, QWidget* parent)
                 "<para><note>This applies to the main recurrence only. It does not limit any sub-repetition which will occur regardless after the last main recurrence.</note></para>"));
     mRangeButtonGroup->addButton(mEndDateButton);
     mEndDateEdit = new KDateComboBox(mRangeButtonBox);
-    mEndDateEdit->setOptions(mReadOnly ? KDateComboBox::Options(nullptr) : KDateComboBox::EditDate | KDateComboBox::SelectDate | KDateComboBox::DatePicker);
+    mEndDateEdit->setOptions(mReadOnly ? KDateComboBox::Options(0) : KDateComboBox::EditDate | KDateComboBox::SelectDate | KDateComboBox::DatePicker);
     static const QString tzText = i18nc("@info", "This uses the same time zone as the start time.");
     mEndDateEdit->setWhatsThis(xi18nc("@info:whatsthis",
           "<para>Enter the last date to repeat the alarm.</para><para>%1</para>", tzText));
@@ -336,7 +336,7 @@ RecurrenceEdit::RecurrenceEdit(bool readOnly, QWidget* parent)
         vlayout->setMargin(0);
         hlayout->addLayout(vlayout);
         mExceptionDateEdit = new KDateComboBox(mExceptionGroup);
-        mExceptionDateEdit->setOptions(mReadOnly ? KDateComboBox::Options(nullptr) : KDateComboBox::EditDate | KDateComboBox::SelectDate | KDateComboBox::DatePicker);
+        mExceptionDateEdit->setOptions(mReadOnly ? KDateComboBox::Options(0) : KDateComboBox::EditDate | KDateComboBox::SelectDate | KDateComboBox::DatePicker);
         mExceptionDateEdit->setDate(KDateTime::currentLocalDate());
         mExceptionDateEdit->setWhatsThis(i18nc("@info:whatsthis",
               "Enter a date to insert in the exceptions list. "

src/resourceselector.cpp

@@ -604,7 +604,7 @@ void ResourceSelector::showInfo()
                              name, id, calType, alarmTypeString, storage, location, perms, enabled, std);
         // Display the collection information. Because the user requested
         // the information, don't raise a KNotify event.
-        KAMessageBox::information(this, text, QString(), QString(), nullptr);
+        KAMessageBox::information(this, text, QString(), QString(), 0);
     }
 }
 

src/specialactions.cpp

@@ -47,7 +47,7 @@
 
 SpecialActionsButton::SpecialActionsButton(bool enableCheckboxes, QWidget* parent)
     : QPushButton(i18nc("@action:button", "Special Actions..."), parent),
-      mOptions(nullptr),
+      mOptions(0),
       mEnableCheckboxes(enableCheckboxes),
       mReadOnly(false)
 {
@@ -247,7 +247,7 @@ QString SpecialActions::postAction() const
 
 KAEvent::ExtraActionOptions SpecialActions::options() const
 {
-    KAEvent::ExtraActionOptions opts = nullptr;
+    KAEvent::ExtraActionOptions opts = 0;
     if (mExecOnDeferral->isChecked())  opts |= KAEvent::ExecPreActOnDeferral;
     if (mCancelOnError->isChecked())   opts |= KAEvent::CancelOnPreActError;
     if (mDontShowError->isChecked())   opts |= KAEvent::DontShowPreActError;