shadowsocks-libev: ss-rules: fix flushing ipv6 rules

"-6" has to be the first argument

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>

net/shadowsocks-libev/Makefile

@@ -14,7 +14,7 @@ include $(TOPDIR)/rules.mk
 #
 PKG_NAME:=shadowsocks-libev
 PKG_VERSION:=3.2.3
-PKG_RELEASE:=5
+PKG_RELEASE:=6
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=https://github.com/shadowsocks/shadowsocks-libev/releases/download/v$(PKG_VERSION)

net/shadowsocks-libev/files/shadowsocks-libev.init

@@ -145,7 +145,7 @@ ss_rules() {
 
 	[ -x "$bin" ] || return 1
 	"$bin" -f
-	"$bin" -f -6
+	"$bin" -6 -f
 
 	config_get cfgtype "$cfg" TYPE
 	[ "$cfgtype" = ss_rules ] || return 1