[mutter] theme: Stop clipping titlebar buttons

[Florian Müllner <fmuellner src gnome org>]

commit 6bacbac656dd62fb711a6b7de6af40a8096b962b
Author: Florian Müllner <fmuellner gnome org>
Date:   Wed Mar 11 15:20:18 2015 +0100

    theme: Stop clipping titlebar buttons
    
    There is no good reason to do so, besides a nice way to check whether
    a particular button is enabled. However there are legitimate reasons
    for overdrawing like box-shadows or outlines, so remove the clip.

 src/ui/theme.c |    4 +---
 1 files changed, 1 insertions(+), 3 deletions(-)
---
diff --git a/src/ui/theme.c b/src/ui/theme.c
index df1eb2d..4aff7e0 100644
--- a/src/ui/theme.c
+++ b/src/ui/theme.c
@@ -770,10 +770,8 @@ meta_frame_layout_draw_with_style (MetaFrameLayout         *layout,
         gtk_style_context_set_state (style, state);
 
       cairo_save (cr);
-      gdk_cairo_rectangle (cr, &button_rect);
-      cairo_clip (cr);
 
-      if (gdk_cairo_get_clip_rectangle (cr, NULL))
+      if (button_rect.width > 0 && button_rect.height > 0)
         {
           cairo_surface_t *surface = NULL;
           const char *icon_name = NULL;