[mod_rewrite] fix return type of process_rewrite_rules

Reference: Fortify Open Review Project - lighttpd 1.4.39
    ID 22708125 - Type Mismatch: Signed to Unsigned

From: Stefan Bühler <stbuehler@web.de>

git-svn-id: svn://svn.lighttpd.net/lighttpd/branches/lighttpd-1.4.x@3095 152afb58-edef-0310-8abb-c4023f1b3aa9

src/mod_rewrite.c

@@ -343,7 +343,7 @@ URIHANDLER_FUNC(mod_rewrite_con_reset) {
 	return HANDLER_GO_ON;
 }
 
-static int process_rewrite_rules(server *srv, connection *con, plugin_data *p, rewrite_rule_buffer *kvb) {
+static handler_t process_rewrite_rules(server *srv, connection *con, plugin_data *p, rewrite_rule_buffer *kvb) {
 	size_t i;
 	handler_ctx *hctx;