media_exchange: make sure we do not unreference NULL dlg

(cherry picked from commit 581a4b8)
OpenSIPS · Sep 8, 2022 · 1ddc675 · 1ddc675
1 parent e2b66bc
commit 1ddc675
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/modules/media_exchange/media_utils.c b/modules/media_exchange/media_utils.c
@@ -518,7 +518,8 @@ void media_exchange_event_received(enum b2b_entity_type et, str *key,
 			break;
 	}
 
-	media_dlg.dlg_unref(dlg, 1);
+	if (dlg)
+		media_dlg.dlg_unref(dlg, 1);
 	return;
 }