[mutter] stage: Fix function definition

[Florian Müllner <fmuellner src gnome org>]

commit 8d7ae5256553a06347a41b765c8f55df37dbeccb
Author: Florian Müllner <fmuellner gnome org>
Date:   Tue May 31 19:49:08 2016 +0200

    stage: Fix function definition

 src/backends/meta-stage.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/src/backends/meta-stage.c b/src/backends/meta-stage.c
index 5ac15d5..3b992d9 100644
--- a/src/backends/meta-stage.c
+++ b/src/backends/meta-stage.c
@@ -47,7 +47,7 @@ typedef struct _MetaStagePrivate MetaStagePrivate;
 G_DEFINE_TYPE_WITH_PRIVATE (MetaStage, meta_stage, CLUTTER_TYPE_STAGE);
 
 static MetaOverlay *
-meta_overlay_new ()
+meta_overlay_new (void)
 {
   MetaOverlay *overlay;
   CoglContext *ctx = clutter_backend_get_cogl_context (clutter_get_default_backend ());