whitespace fixes

remove trailing spaces & expand tabs.

Change-Id: I05ef110abed90f13b47752760ffb4567a11a6a5e
Reviewed-by: Yoann Lopes <yoann.lopes@digia.com>
Reviewed-by: Tony Sarajärvi <tony.sarajarvi@digia.com>

examples/multimediawidgets/videographicsitem/main.cpp

@@ -49,6 +49,6 @@ int main(int argc, char **argv)
     VideoPlayer player;
     player.show();
 
-    return app.exec(); 
+    return app.exec();
 }