[libhandy] swipe-tracker: Fix get_swipeable() annotations

[Adrien Plazas <aplazas src gnome org>]

commit 4dd7a134e9bfa1d9fff40d7c543e596c89b68082
Author: Alexander Mikhaylenko <alexm gnome org>
Date:   Sat Jun 27 00:45:44 2020 +0500

    swipe-tracker: Fix get_swipeable() annotations
    
    Add (transfer none) to the return value.
    
    Signed-off-by: Alexander Mikhaylenko <alexm gnome org>

 src/hdy-swipe-tracker.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/src/hdy-swipe-tracker.c b/src/hdy-swipe-tracker.c
index 6c099b26..1aea8645 100644
--- a/src/hdy-swipe-tracker.c
+++ b/src/hdy-swipe-tracker.c
@@ -853,7 +853,7 @@ hdy_swipe_tracker_new (HdySwipeable *swipeable)
  *
  * Get @self's swipeable widget.
  *
- * Returns: the swipeable widget
+ * Returns: (transfer none): the swipeable widget
  *
  * Since: 1.0
  */