Fix a few warnings that appear with -Wextra (unused parameters where WXUNUSED is already used for other parameters

for the same function, and some GTypeInfo initializations)


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@41294 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/dnd.cpp

@@ -655,7 +655,7 @@ source_drag_data_get  (GtkWidget          *WXUNUSED(widget),
 
 extern "C" {
 static void source_drag_data_delete( GtkWidget *WXUNUSED(widget),
-                                     GdkDragContext *context,
+                                     GdkDragContext *WXUNUSED(context),
                                      wxDropSource *WXUNUSED(drop_source) )
 {
     if (g_isIdle)