FS-9314: [mod_conference] fix crash when starting conference in mux mode while speci...

diff --git a/src/mod/applications/mod_conference/conference_video.c b/src/mod/applications/mod_conference/conference_video.c
index 7fccb51fa66ce072c5a4ff32670948730992ed4e..13f15a2af7207fbec70e5b11ee63eda8ede66ccd 100644 (file)
--- a/src/mod/applications/mod_conference/conference_video.c
+++ b/src/mod/applications/mod_conference/conference_video.c
@@ -1354,6 +1354,10 @@ video_layout_t *conference_video_find_best_layout(conference_obj_t *conference,
                }
        }
 
+       if (!lg) {
+               return NULL;
+       }
+
        for (vlnode = lg->layouts; vlnode; vlnode = vlnode->next) {
                if (vlnode->vlayout->layers >= (int)count) {
                        break;