[gtk+/gestures: 27/117] gesture: Skip non-device events early.

[Carlos Garnacho <carlosg src gnome org>]

commit 1e7daa9a214565a4b741bb56d883bb767cd073b0
Author: Carlos Garnacho <carlosg gnome org>
Date:   Fri Mar 21 17:17:42 2014 +0100

    gesture: Skip non-device events early.

 gtk/gtkgesture.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)
---
diff --git a/gtk/gtkgesture.c b/gtk/gtkgesture.c
index adccc87..71d9b0e 100644
--- a/gtk/gtkgesture.c
+++ b/gtk/gtkgesture.c
@@ -322,8 +322,14 @@ gtk_gesture_handle_event (GtkEventController *controller,
   GtkGesture *gesture = GTK_GESTURE (controller);
   GdkEventSequence *sequence;
   GtkGesturePrivate *priv;
+  GdkDevice *source_device;
   gboolean was_recognized;
 
+  source_device = gdk_event_get_source_device (event);
+
+  if (!source_device)
+    return FALSE;
+
   priv = gtk_gesture_get_instance_private (gesture);
   sequence = gdk_event_get_event_sequence (event);
   priv->last_sequence = sequence;