[mutter] MetaWindow: fix annotation

[Giovanni Campagna <gcampagna src gnome org>]

commit e6d5e98c9ddf77d78db1a6ae57c10829cfb849ba
Author: Giovanni Campagna <gcampagna src gnome org>
Date:   Wed Feb 27 17:50:48 2013 +0100

    MetaWindow: fix annotation
    
    caller-allocates makes sense only for structure, and gjs will complain
    if used on anything else
    
    https://bugzilla.gnome.org/show_bug.cgi?id=694801

 src/core/window.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/src/core/window.c b/src/core/window.c
index a9d4ec4..1faff6b 100644
--- a/src/core/window.c
+++ b/src/core/window.c
@@ -3650,8 +3650,7 @@ meta_window_is_fullscreen (MetaWindow *window)
 /**
  * meta_window_get_all_monitors:
  * @window: The #MetaWindow
- * @length: (out caller-allocates): gint holding the length, may be %NULL to
- *                                  ignore
+ * @length: (out): gint holding the length, may be %NULL to ignore
  *
  * Returns: (array length=length) (element-type gint) (transfer container):
  *           List of the monitor indices the window is on.