firewall: fix potential NULL pointer access

Properly skip struct ifaddr entries with NULL ifa_addr, thanks Kostas Papadopoulos for reporting.

Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>

SVN-Revision: 42138

package/network/config/firewall/Makefile

@@ -8,13 +8,13 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=firewall
-PKG_VERSION:=2014-08-11
+PKG_VERSION:=2014-08-11a
 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:=2807cc26b8e46eef5f23c06534a853dd48183331
+PKG_SOURCE_VERSION:=8205107ffd31a21c1d4d93eaa7a44d41c6c3c10d
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION)-$(PKG_SOURCE_VERSION).tar.gz
 PKG_MAINTAINER:=Jo-Philipp Wich <jow@openwrt.org>