[mutter] clutter/seat: Fix initial value in clutter_seat_has_touchscreen()

[Marge Bot <marge-bot src gnome org>]

commit 71b78c7bf44f4fd5313a66712ce4367169d8e0f7
Author: Jonas Ådahl <jadahl gmail com>
Date:   Wed Mar 24 11:48:40 2021 +0100

    clutter/seat: Fix initial value in clutter_seat_has_touchscreen()
    
    If we didn't have a touchscreen, we returned an uninitialized value.
    
    Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1801>

 clutter/clutter/clutter-seat.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/clutter/clutter/clutter-seat.c b/clutter/clutter/clutter-seat.c
index 4aa8e7abbf..24f36edbdf 100644
--- a/clutter/clutter/clutter-seat.c
+++ b/clutter/clutter/clutter-seat.c
@@ -672,7 +672,7 @@ clutter_seat_get_touch_mode (ClutterSeat *seat)
 gboolean
 clutter_seat_has_touchscreen (ClutterSeat *seat)
 {
-  gboolean has_touchscreen;
+  gboolean has_touchscreen = FALSE;
   const GList *devices, *l;
 
   g_return_val_if_fail (CLUTTER_IS_SEAT (seat), FALSE);