Cleanup transition data, to align with oxygen

kstyle/animations/breezetransitiondata.cpp

@@ -37,6 +37,6 @@ namespace Breeze
 
     //_________________________________________________________________
     TransitionData::~TransitionData( void )
-    { if( transition() ) _transition.data()->deleteLater(); }
+    { if( _transition ) _transition.data()->deleteLater(); }
 
 }

kstyle/animations/breezetransitiondata.h

@@ -61,7 +61,7 @@ namespace Breeze
         //* duration
         virtual void setDuration( int duration )
         {
-            if( transition() )
+            if( _transition )
             { _transition.data()->setDuration( duration ); }
         }