Fix trailing whitespaces

Reviewed-by: TRUSTME
(cherry picked from commit d4fd21f746b536eaddbdd7a07f1d717ef18278e7)

src/opengl/qwindowsurface_gl.cpp

@@ -614,7 +614,7 @@ void QGLWindowSurface::flush(QWidget *widget, const QRegion &rgn, const QPoint &
     if (window() != widget) {
         // For performance reasons we don't support
         // flushing native child widgets on Symbian.
-        // It breaks overlapping native child widget 
+        // It breaks overlapping native child widget
         // rendering in some cases but we prefer performance.
         return;
     }

src/openvg/qwindowsurface_vg.cpp

@@ -83,7 +83,7 @@ void QVGWindowSurface::flush(QWidget *widget, const QRegion &region, const QPoin
     if (window() != widget) {
         // For performance reasons we don't support
         // flushing native child widgets on Symbian.
-        // It breaks overlapping native child widget 
+        // It breaks overlapping native child widget
         // rendering in some cases but we prefer performance.
         return;
     }