iptables: pass --disable-ipv6 if CONFIG_IPV6 is off, fixes undefined refs to in6addr_any when compiling with external CodeSourcery toolchain

SVN-Revision: 29778

package/iptables/Makefile

@@ -388,7 +388,7 @@ TARGET_CFLAGS += \
 CONFIGURE_ARGS += \
 	--enable-shared \
 	--enable-devel \
-	--enable-ipv6 \
+	$(if $(CONFIG_IPV6),--enable-ipv6,--disable-ipv6) \
 	--enable-libipq \
 	--with-kernel="$(LINUX_DIR)" \
 	--with-xtlibdir=/usr/lib/iptables