From David Callu, warning fixes and removal of spaces at end of lines.

src/osgQt/QWidgetImage.cpp

@@ -43,7 +43,7 @@ void QWidgetImage::render()
     _adapter->render();
 }
 
-void QWidgetImage::scaleImage(int s,int t,int r, GLenum newDataType)
+void QWidgetImage::scaleImage(int s,int t,int /*r*/, GLenum /*newDataType*/)
 {
     _adapter->resize(s, t);
 }