[gtk+/gtk-3-20] gesture: Don't leak stashed events

[Matthias Clasen <matthiasc src gnome org>]

commit e3e84de96c0a99dd8bd838337ecb0d7ab315f156
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun May 1 13:23:12 2016 -0400

    gesture: Don't leak stashed events
    
    These events were never freed.

 gtk/gtkgesture.c |   13 ++++++++++++-
 1 files changed, 12 insertions(+), 1 deletions(-)
---
diff --git a/gtk/gtkgesture.c b/gtk/gtkgesture.c
index 47fa3c5..8eaa518 100644
--- a/gtk/gtkgesture.c
+++ b/gtk/gtkgesture.c
@@ -994,13 +994,24 @@ gtk_gesture_class_init (GtkGestureClass *klass)
 }
 
 static void
+free_point_data (gpointer data)
+{
+  PointData *point = data;
+
+  if (point->event)
+    gdk_event_free (point->event);
+
+  g_free (point);
+}
+
+static void
 gtk_gesture_init (GtkGesture *gesture)
 {
   GtkGesturePrivate *priv;
 
   priv = gtk_gesture_get_instance_private (gesture);
   priv->points = g_hash_table_new_full (NULL, NULL, NULL,
-                                        (GDestroyNotify) g_free);
+                                        (GDestroyNotify) free_point_data);
   gtk_event_controller_set_event_mask (GTK_EVENT_CONTROLLER (gesture),
                                        GDK_TOUCH_MASK |
                                        GDK_TOUCHPAD_GESTURE_MASK);