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xwm: check whether the picked seat can be NULL

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The seat picked in weston_wm_window_handle_moveresize can sometimes
be NULL when it is (somehow) triggered with all buttons released.

This patch checks whether the seat is NULL to avoid NULL dereference.

Fixes: https://bugs.freedesktop.org/show_bug.cgi?id=80837
Signed-off-by: Boyan Ding <stu_dby@126.com>
This commit is contained in:
Boyan Ding 2014-07-06 11:44:58 +08:00 committed by Pekka Paalanen
parent a0fae4657f
commit c06a180dd5
1 changed files with 2 additions and 2 deletions
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4
xwayland/window-manager.c
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@ -1244,8 +1244,8 @@ weston_wm_window_handle_moveresize(struct weston_wm_window *window,
struct weston_shell_interface *shell_interface =
&wm->server->compositor->shell_interface;
if (seat->pointer->button_count != 1 || !window->view
|| seat->pointer->focus != window->view)
if (seat == NULL || seat->pointer->button_count != 1
|| !window->view || seat->pointer->focus != window->view)
return;
detail = client_message->data.data32[2];