[mutter/wayland] keybindings: Fix style

[Jasper St. Pierre <jstpierre src gnome org>]

commit 9fe5a3b407171fc6bc2aef3fb3b18922e1bdd459
Author: Jasper St. Pierre <jstpierre mecheye net>
Date:   Mon Apr 7 15:59:38 2014 -0400

    keybindings: Fix style

 src/core/keybindings.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
---
diff --git a/src/core/keybindings.c b/src/core/keybindings.c
index cefcf23..f886ed5 100644
--- a/src/core/keybindings.c
+++ b/src/core/keybindings.c
@@ -743,7 +743,8 @@ display_get_keybinding (MetaDisplay  *display,
 }
 
 static guint
-next_dynamic_keybinding_action () {
+next_dynamic_keybinding_action (void)
+{
   static guint num_dynamic_bindings = 0;
   return META_KEYBINDING_ACTION_LAST + (++num_dynamic_bindings);
 }