[mutter] MetaWaylandPopup: Dismiss popup when grab is cancelled

[Jonas Ådahl <jadahl src gnome org>]

commit 9de6de5802fb7559c71617bf2944100703cbdbff
Author: Jonas Ådahl <jadahl gmail com>
Date:   Wed Sep 21 14:45:51 2016 +0800

    MetaWaylandPopup: Dismiss popup when grab is cancelled
    
    Dismiss the popup when the grab is cancelled, so that if the grab is
    ended for whatever reason (such as VT switching or the last pointer
    being disconnected), it doesn't try to end the grab when it isn't
    active.
    
    This fixes a crash when VT switching back and forth while a popup grab
    is active.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=771858

 src/wayland/meta-wayland-popup.c |    9 ++++++++-
 1 files changed, 8 insertions(+), 1 deletions(-)
---
diff --git a/src/wayland/meta-wayland-popup.c b/src/wayland/meta-wayland-popup.c
index f9141dd..1b36d00 100644
--- a/src/wayland/meta-wayland-popup.c
+++ b/src/wayland/meta-wayland-popup.c
@@ -141,10 +141,17 @@ popup_grab_button (MetaWaylandPointerGrab *grab,
     meta_wayland_pointer_end_popup_grab (grab->pointer);
 }
 
+static void
+popup_grab_cancel (MetaWaylandPointerGrab *grab)
+{
+  meta_wayland_pointer_end_popup_grab (grab->pointer);
+}
+
 static MetaWaylandPointerGrabInterface popup_grab_interface = {
   popup_grab_focus,
   popup_grab_motion,
-  popup_grab_button
+  popup_grab_button,
+  popup_grab_cancel
 };
 
 MetaWaylandPopupGrab *