firewall3: update to git head

- fixes segfault in flush command if ipset support is not available
  - fixes internal rule generation if custom chains are enabled

SVN-Revision: 36686

package/network/config/firewall3/Makefile

@@ -8,13 +8,13 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=firewall3
-PKG_VERSION:=2013-05-21
+PKG_VERSION:=2013-05-21.1
 PKG_RELEASE:=$(PKG_SOURCE_VERSION)
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL:=git://nbd.name/firewall3.git
 PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
-PKG_SOURCE_VERSION:=54904110e3122f4fcded32f5ff6ef30f7de7363c
+PKG_SOURCE_VERSION:=a7d923052fa3ca69a5f5453a872bc976fbb0f75a
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION)-$(PKG_SOURCE_VERSION).tar.gz
 PKG_MAINTAINER:=Jo-Philipp Wich <jow@openwrt.org>