6in4: fix invalid local variable declaration (FS#188)

Remove an invalid local variable declaration in the tunnel update subshell
invocation. Local declarations outside of function scopes are illegal since
the Busybox update to version 1.25.0 .

Signed-off-by: Jo-Philipp Wich <[email protected]>

package/network/ipv6/6in4/Makefile

@@ -8,7 +8,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=6in4
-PKG_VERSION:=23
+PKG_VERSION:=24
 PKG_RELEASE:=1
 PKG_LICENSE:=GPL-2.0
 
@@ -19,7 +19,7 @@ define Package/6in4
   CATEGORY:=Network
   DEPENDS:=@IPV6 +kmod-sit +uclient-fetch
   TITLE:=IPv6-in-IPv4 configuration support
-  MAINTAINER:=Jo-Philipp Wich <[email protected]>
+  MAINTAINER:=Jo-Philipp Wich <[email protected]>
   PKGARCH:=all
 endef
 

package/network/ipv6/6in4/files/6in4.sh

@@ -11,7 +11,7 @@
 
 proto_6in4_update() {
 	sh -c '
-		local timeout=5
+		timeout=5
 
 		(while [ $((timeout--)) -gt 0 ]; do
 			sleep 1