Use ast_free() instead of free().

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@216593 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_voicemail.c

@@ -2357,7 +2357,7 @@ static struct ast_vm_user *find_user_realtime_imapuser(const char *imapuser)
 		ast_variables_destroy(var);
 		return vmu;
 	} else {
-		free(vmu);
+		ast_free(vmu);
 		return NULL;
 	}
 }