[PATCH weston] clients: ungrab the correct input when menus close

[Derek Foreman]

We need to input_ungrab() on the stored input, not the one that caused
the release - otherwise bad things can happen in multi-seat environments
when a seat that didn't open the menu closes it.

To reproduce:
 configure two seats
 launch weston terminal
 open the right click pop up
 select a menu item from the other seat

The next click from the seat that opened the menu will cause a segfault.

Signed-off-by: Derek Foreman <derekf at osg.samsung.com>
---
 clients/window.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/clients/window.c b/clients/window.c
index 0e73f5b..47a79aa 100644
--- a/clients/window.c
+++ b/clients/window.c
@@ -4738,7 +4738,7 @@ menu_button_handler(struct widget *widget,
 		/* Either relase after press-drag-release or
 		 * click-motion-click. */
 		menu->func(menu->user_data, input, menu->current);
-		input_ungrab(input);
+		input_ungrab(menu->input);
 		menu_destroy(menu);
 	} else if (state == WL_POINTER_BUTTON_STATE_RELEASED) {
 		menu->release_count++;
-- 
2.5.1