Merge "res_musiconhold.c: Fix format ref leak when parsing MOH config class." into 14

res/res_musiconhold.c

@@ -1060,6 +1060,7 @@ static void moh_parse_options(struct ast_variable *var, struct mohclass *mohclas
 				ast_set_flag(mohclass, MOH_RANDSTART);
 			}
 		} else if (!strcasecmp(var->name, "format")) {
+			ao2_cleanup(mohclass->format);
 			mohclass->format = ast_format_cache_get(var->value);
 			if (!mohclass->format) {
 				ast_log(LOG_WARNING, "Unknown format '%s' -- defaulting to SLIN\n", var->value);