[mutter] renderer-native: Adjust to StageView memory handling changes

[Florian Müllner <fmuellner src gnome org>]

commit de1464f88f7abebfdcfd0d529b5a4e5057c9bfe2
Author: Florian Müllner <fmuellner gnome org>
Date:   Wed Jul 20 20:56:07 2016 +0200

    renderer-native: Adjust to StageView memory handling changes
    
    ClutterStageView now takes ownership of the :framebuffer property,
    so we need to release our own reference.

 src/backends/native/meta-renderer-native.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/src/backends/native/meta-renderer-native.c b/src/backends/native/meta-renderer-native.c
index 117e522..a3763b1 100644
--- a/src/backends/native/meta-renderer-native.c
+++ b/src/backends/native/meta-renderer-native.c
@@ -1022,6 +1022,7 @@ meta_renderer_native_create_legacy_view (MetaRendererNative *renderer_native)
                        "layout", &view_layout,
                        "framebuffer", framebuffer,
                        NULL);
+  cogl_object_unref (framebuffer);
 
   meta_onscreen_native_set_view (onscreen, view);
 
@@ -1056,6 +1057,7 @@ meta_renderer_native_create_view (MetaRenderer    *renderer,
                        "framebuffer", framebuffer,
                        "monitor-info", monitor_info,
                        NULL);
+  cogl_object_unref (framebuffer);
 
   meta_onscreen_native_set_view (onscreen, view);