--- apps/app_voicemail.c.orig	2019-11-21 23:07:42.000000000 +0200
+++ apps/app_voicemail.c	2019-11-25 12:12:12.035229688 +0200
@@ -13556,7 +13556,8 @@
 	astman_send_listack(s, m, "Voicemail user list will follow", "start");
 
 	AST_LIST_TRAVERSE(&users, vmu, list) {
-		int new, old;
+		int new = 0;
+		int old = 0;
 		int ret;
 		char *mailbox;