Use correct boolean

src/kmkernel.cpp

@@ -1168,7 +1168,7 @@ void KMKernel::action(bool mailto, bool check, bool startInTray, const QString &
                       const QString &inReplyTo, const QString &identity)
 {
     if (mailto) {
-        openComposer(to, cc, bcc, subj, body, 0,
+        openComposer(to, cc, bcc, subj, body, false,
                      messageFile.toLocalFile(), QUrl::toStringList(attachURLs),
                      customHeaders, replyTo, inReplyTo, identity);
     } else {

src/tests/dbustest.cpp

@@ -16,9 +16,9 @@ int main(int argc, char **argv)
     parser.process(app);
 
     OrgKdeKmailKmailInterface kmailInterface(QStringLiteral("org.kde.kmail"), QStringLiteral("/KMail"), QDBusConnection::sessionBus());
-    kmailInterface.openComposer(QStringLiteral("to 1"), QString(), QString(), QStringLiteral("First test"), QStringLiteral("simple openComp call"), 0);
+    kmailInterface.openComposer(QStringLiteral("to 1"), QString(), QString(), QStringLiteral("First test"), QStringLiteral("simple openComp call"), false);
 
-    QDBusReply<QDBusObjectPath> composerDbusPath = kmailInterface.openComposer(QStringLiteral("to 2"), QString(), QString(), QStringLiteral("Second test"), QStringLiteral("DBUS ref call"), 0);
+    QDBusReply<QDBusObjectPath> composerDbusPath = kmailInterface.openComposer(QStringLiteral("to 2"), QString(), QString(), QStringLiteral("Second test"), QStringLiteral("DBUS ref call"), false);
 
     if (!composerDbusPath.isValid()) {
         qDebug() << "We can't connect to kmail";