Use nullptr

searchhandler.cpp

@@ -49,7 +49,7 @@ bool SearchJob::startLocal(const QString &cmdString)
     mProcess->setOutputChannelMode(KProcess::SeparateChannels);
     mProcess->start();
     if (!mProcess->waitForStarted()) {
-        QString txt = i18n("Error executing search command '%1'.", cmdString );
+        const QString txt = i18n("Error executing search command '%1'.", cmdString );
         Q_EMIT searchError( this, mEntry, txt );
         return false;
     }

toc.cpp

@@ -45,7 +45,7 @@ class TOCItem : public NavigatorItem
         const TOC *toc() const { return m_toc; }
 
     private:
-        TOC *m_toc;
+        TOC *m_toc = nullptr;
 };
 
 class TOCChapterItem : public TOCItem
@@ -75,8 +75,8 @@ class TOCSectionItem : public TOCItem
 bool TOC::m_alreadyWarned = false;
 
 TOC::TOC( NavigatorItem *parentItem )
+    : m_parentItem(parentItem)
 {
-    m_parentItem = parentItem;
 }
 
 void TOC::build( const QString &file )

toc.h

@@ -65,7 +65,7 @@ class TOC : public QObject
 		QString m_cacheFile;
 		QString m_sourceFile;
 
-        NavigatorItem *m_parentItem = nullptr;
+        NavigatorItem *const m_parentItem;
 		static bool m_alreadyWarned;
 };