[gnome-photos] gesture-zoom: Use g_auto*

[Umang Jain <uajain src gnome org>]

commit 1b517d8ba364a26cbec75a56b5b44b858aae8f99
Author: Umang Jain <mailumangjain gmail com>
Date:   Tue Nov 28 09:59:45 2017 +0530

    gesture-zoom: Use g_auto*
    
    https://bugzilla.gnome.org/show_bug.cgi?id=788174

 src/photos-gesture-zoom.c |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/src/photos-gesture-zoom.c b/src/photos-gesture-zoom.c
index 8b63573..525c61e 100644
--- a/src/photos-gesture-zoom.c
+++ b/src/photos-gesture-zoom.c
@@ -60,7 +60,7 @@ G_DEFINE_TYPE (PhotosGestureZoom, photos_gesture_zoom, G_TYPE_OBJECT);
 static gdouble
 photos_gesture_zoom_calculate_distance (PhotosGestureZoom *self, GdkTouchpadGesturePhase touchpad_phase)
 {
-  GList *sequences = NULL;
+  g_autoptr (GList) sequences = NULL;
   const GdkEvent *last_event;
   gdouble ret_val = -1.0;
 
@@ -92,7 +92,6 @@ photos_gesture_zoom_calculate_distance (PhotosGestureZoom *self, GdkTouchpadGest
       ret_val = sqrt (distance2);
     }
 
-  g_list_free (sequences);
   return ret_val;
 }