[cogl] matrix-stack: add missing transfer annotation

[Robert Bragg <rbragg src gnome org>]

commit 13290623ff328c950e6be41747db2a7b5455a669
Author: Lionel Landwerlin <llandwerlin gmail com>
Date:   Tue Sep 3 15:41:06 2013 +0100

    matrix-stack: add missing transfer annotation
    
    Reviewed-by: Robert Bragg <robert linux intel com>
    
    (cherry picked from commit 232842c1f78daccc09f0567a6a00900f930e6d13)

 cogl/cogl-matrix-stack.h |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/cogl/cogl-matrix-stack.h b/cogl/cogl-matrix-stack.h
index 0ba8195..4498ec2 100644
--- a/cogl/cogl-matrix-stack.h
+++ b/cogl/cogl-matrix-stack.h
@@ -190,7 +190,7 @@ typedef struct _CoglMatrixEntry CoglMatrixEntry;
  * cogl_matrix_stack_rotate(), cogl_matrix_stack_scale() and
  * cogl_matrix_stack_translate().
  *
- * Return value: A newly allocated #CoglMatrixStack
+ * Return value: (transfer full): A newly allocated #CoglMatrixStack
  */
 CoglMatrixStack *
 cogl_matrix_stack_new (CoglContext *ctx);