[mutter] wayland/buffer: Add missing breaks in switch statement

[Jonas Ådahl <jadahl src gnome org>]

commit 9a47e5c83276318e834de5d5d69108217d8f6b92
Author: Jonas Ådahl <jadahl gmail com>
Date:   Tue Aug 1 17:15:57 2017 +0800

    wayland/buffer: Add missing breaks in switch statement
    
    We'd process damage, and no matter whether it succeeded or not we'd
    pretend it succeeded, meaning any potential GError would be leaked.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=786300

 src/wayland/meta-wayland-buffer.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/wayland/meta-wayland-buffer.c b/src/wayland/meta-wayland-buffer.c
index 63d5380..5556449 100644
--- a/src/wayland/meta-wayland-buffer.c
+++ b/src/wayland/meta-wayland-buffer.c
@@ -446,6 +446,7 @@ meta_wayland_buffer_process_damage (MetaWaylandBuffer *buffer,
     {
     case META_WAYLAND_BUFFER_TYPE_SHM:
       res = process_shm_buffer_damage (buffer, region, &error);
+      break;
     case META_WAYLAND_BUFFER_TYPE_EGL_IMAGE:
     case META_WAYLAND_BUFFER_TYPE_EGL_STREAM:
     case META_WAYLAND_BUFFER_TYPE_DMA_BUF:
@@ -456,6 +457,7 @@ meta_wayland_buffer_process_damage (MetaWaylandBuffer *buffer,
                    G_IO_ERROR_FAILED,
                    "Unknown buffer type");
       res = FALSE;
+      break;
     }
 
   if (!res)