layout: Check against app_id being valid

All app_ids are not valid for xwayland type of surfaces to need to check
against it.

Bug-AGL: SPEC-4847
Signed-off-by: Marius Vlad <marius.vlad@collabora.com>
Change-Id: I84dc9b493648f4fe48b1c23c8ead0283505acce0

diff --git a/src/layout.c b/src/layout.c
index 5576094..c11dacb 100644 (file)
--- a/src/layout.c
+++ b/src/layout.c
@@ -325,7 +325,7 @@ ivi_layout_activate_complete(struct ivi_output *output,
                 * we're trying to complete activation with means we're
                 * operating on the same app_id so do update previous_active as
                 * it will overwrite it with the same value */
-               if (!strcmp(c_app_id, app_id)) {
+               if (app_id && !strcmp(c_app_id, app_id)) {
                        update_previous = false;
                }
        }