Remove the !this checks

It's not part of the standard and GCC recently removed support for it

Looking at the code it seems we only need one external check, let's hope i'm right :D

core/area.h

@@ -655,9 +655,6 @@ void RegularArea<NormalizedShape, Shape>::simplify()
 template <class NormalizedShape, class Shape>
 bool RegularArea<NormalizedShape, Shape>::isNull() const
 {
-    if ( !this )
-        return false;
-
     if ( this->isEmpty() )
         return false;
 
@@ -672,9 +669,6 @@ bool RegularArea<NormalizedShape, Shape>::isNull() const
 template <class NormalizedShape, class Shape>
 bool RegularArea<NormalizedShape, Shape>::intersects( const NormalizedShape& rect ) const
 {
-    if ( !this )
-        return false;
-
     if ( this->isEmpty() )
         return false;
 
@@ -689,9 +683,6 @@ bool RegularArea<NormalizedShape, Shape>::intersects( const NormalizedShape& rec
 template <class NormalizedShape, class Shape>
 bool RegularArea<NormalizedShape, Shape>::intersects( const RegularArea<NormalizedShape,Shape> *area ) const
 {
-    if ( !this )
-        return false;
-
     if ( this->isEmpty() )
         return false;
 
@@ -712,9 +703,6 @@ bool RegularArea<NormalizedShape, Shape>::intersects( const RegularArea<Normaliz
 template <class NormalizedShape, class Shape>
 void RegularArea<NormalizedShape, Shape>::appendArea( const RegularArea<NormalizedShape, Shape> *area )
 {
-    if ( !this )
-        return;
-
     typename QList<NormalizedShape>::const_iterator areaIt = area->begin(), areaItEnd = area->end();
     for ( ; areaIt != areaItEnd; ++areaIt )
         this->append( *areaIt );
@@ -724,9 +712,6 @@ void RegularArea<NormalizedShape, Shape>::appendArea( const RegularArea<Normaliz
 template <class NormalizedShape, class Shape>
 void RegularArea<NormalizedShape, Shape>::appendShape( const NormalizedShape& shape, MergeSide side )
 {
-    if ( !this )
-        return;
-
     int size = this->count();
     // if the list is empty, adds the shape normally
     if ( size == 0 )
@@ -799,9 +784,6 @@ void RegularArea<NormalizedShape, Shape>::appendShape( const NormalizedShape& sh
 template <class NormalizedShape, class Shape>
 bool RegularArea<NormalizedShape, Shape>::contains( double x, double y ) const
 {
-    if ( !this )
-        return false;
-
     if ( this->isEmpty() )
         return false;
 
@@ -816,9 +798,6 @@ bool RegularArea<NormalizedShape, Shape>::contains( double x, double y ) const
 template <class NormalizedShape, class Shape>
 bool RegularArea<NormalizedShape, Shape>::contains( const NormalizedShape& shape ) const
 {
-    if ( !this )
-        return false;
-
     if ( this->isEmpty() )
         return false;
 
@@ -828,7 +807,7 @@ bool RegularArea<NormalizedShape, Shape>::contains( const NormalizedShape& shape
 template <class NormalizedShape, class Shape>
 QList<Shape> RegularArea<NormalizedShape, Shape>::geometry( int xScale, int yScale, int dx, int dy ) const
 {
-    if ( !this || this->isEmpty() )
+    if ( this->isEmpty() )
         return QList<Shape>();
 
     QList<Shape> ret;
@@ -847,9 +826,6 @@ QList<Shape> RegularArea<NormalizedShape, Shape>::geometry( int xScale, int ySca
 template <class NormalizedShape, class Shape>
 void RegularArea<NormalizedShape, Shape>::transform( const QTransform &matrix )
 {
-    if ( !this )
-        return;
-
     if ( this->isEmpty() )
         return;
 

ui/pageviewannotator.cpp

@@ -521,7 +521,7 @@ class TextSelectorEngine : public AnnotatorEngine
                     delete selection;
                     selection = 0;
                     Okular::RegularAreaRect * newselection = m_pageView->textSelectionForItem( item(), start, end );
-                    if ( !newselection->isEmpty() )
+                    if ( newselection && !newselection->isEmpty() )
                     {
                         const QList<QRect> geom = newselection->geometry( (int)xScale, (int)yScale );
                         QRect newrect;