[mutter/gnome-3-18] iconcache: Mark surfaces as dirty after changing data

[Florian Müllner <fmuellner src gnome org>]

commit 83d19c8ae20549a8578d22a5cfd9d73816443311
Author: Florian Müllner <fmuellner gnome org>
Date:   Fri Oct 16 03:57:31 2015 +0200

    iconcache: Mark surfaces as dirty after changing data
    
    This is required to tell cairo to update its cached areas.

 src/x11/iconcache.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/x11/iconcache.c b/src/x11/iconcache.c
index 4747295..508dd82 100644
--- a/src/x11/iconcache.c
+++ b/src/x11/iconcache.c
@@ -182,6 +182,8 @@ argbdata_to_surface (gulong *argb_data, int w, int h)
         }
     }
 
+  cairo_surface_mark_dirty (surface);
+
   return surface;
 }