[gtk+/gtk-3-18] Fix gtk_scrollable_get_border annotation

[Rico Tzschichholz <ricotz src gnome org>]

commit f3b4148361d1ecb7b89a82981d2b04658d7de8a2
Author: Lukas K <lu 0x83 eu>
Date:   Sun Apr 3 15:31:05 2016 +0200

    Fix gtk_scrollable_get_border annotation
    
    https://bugzilla.gnome.org/show_bug.cgi?id=764540
    (cherry picked from commit 8fc1ca1ef28bc70a5581112185a776f6158b0d6d)

 gtk/gtkscrollable.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkscrollable.c b/gtk/gtkscrollable.c
index 1ac26b6..6cea0ce 100644
--- a/gtk/gtkscrollable.c
+++ b/gtk/gtkscrollable.c
@@ -316,7 +316,7 @@ gtk_scrollable_set_vscroll_policy (GtkScrollable       *scrollable,
 /**
  * gtk_scrollable_get_border:
  * @scrollable: a #GtkScrollable
- * @border: return location for the results
+ * @border: (out caller-allocates): return location for the results
  *
  * Returns the size of a non-scrolling border around the
  * outside of the scrollable. An example for this would