[mutter] backends/stage: Fix minor style issue

[Jonas Ådahl <jadahl src gnome org>]

commit 7ac20831344411f72f0ae54c689da571204a6614
Author: Jonas Ådahl <jadahl gmail com>
Date:   Wed Dec 12 11:39:00 2018 +0100

    backends/stage: Fix minor style issue
    
    https://gitlab.gnome.org/GNOME/mutter/merge_requests/357

 src/backends/meta-stage.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/src/backends/meta-stage.c b/src/backends/meta-stage.c
index 9b1dadab7..2b6f8edc5 100644
--- a/src/backends/meta-stage.c
+++ b/src/backends/meta-stage.c
@@ -30,7 +30,8 @@
 #include "meta/meta-monitor-manager.h"
 #include "meta/util.h"
 
-struct _MetaOverlay {
+struct _MetaOverlay
+{
   gboolean enabled;
 
   CoglPipeline *pipeline;