[cogl/cogl-1.16] sub-texture: add missing transfer annotaion

[Robert Bragg <rbragg src gnome org>]

commit 7cc83d58a28db9b594a164dca9e2f6c0cf46d2ff
Author: Lionel Landwerlin <llandwerlin gmail com>
Date:   Tue Sep 3 15:38:32 2013 +0100

    sub-texture: add missing transfer annotaion
    
    Reviewed-by: Robert Bragg <robert linux intel com>

 cogl/cogl-sub-texture.h |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/cogl/cogl-sub-texture.h b/cogl/cogl-sub-texture.h
index d08810a..1130b83 100644
--- a/cogl/cogl-sub-texture.h
+++ b/cogl/cogl-sub-texture.h
@@ -72,8 +72,8 @@ typedef struct _CoglSubTexture CoglSubTexture;
  * #CoglMetaTexture interface to resolve a #CoglSubTexture into a
  * low-level texture before drawing.</note>
  *
- * Returns: A newly allocated #CoglSubTexture representing a
- *          sub-region of @parent_texture.
+ * Return value: (transfer full): A newly allocated #CoglSubTexture
+ *          representing a sub-region of @parent_texture.
  *
  * Since: 1.10
  * Stability: unstable