win32/cursor: Ignore GdkPixbuf deprecation warning

Seems harmless to ignore this for now, other bits of code also ignore
this.

gdk/win32/gdkcursor-win32.c

@@ -908,7 +908,9 @@ _gdk_win32_create_hicon_for_texture (GdkTexture *texture,
   width = cairo_image_surface_get_width (surface);
   height = cairo_image_surface_get_height (surface);
 
+G_GNUC_BEGIN_IGNORE_DEPRECATIONS
   pixbuf = gdk_pixbuf_get_from_surface (surface, 0, 0, width, height);
+G_GNUC_END_IGNORE_DEPRECATIONS
 
   icon = pixbuf_to_hicon (pixbuf, is_icon, x, y);