libubox: update to latest version, fixes uloop recursion issues

Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 36956

package/libs/libubox/Makefile

 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=libubox
-PKG_VERSION:=2013-06-11
+PKG_VERSION:=2013-06-18
 PKG_RELEASE=$(PKG_SOURCE_VERSION)
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL:=git://nbd.name/luci2/libubox.git
 PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
-PKG_SOURCE_VERSION:=ae40b6613019f02e856b4b1ccc2712984506152e
+PKG_SOURCE_VERSION:=b9ebdbcc648274cc630b6349374f9fb21e53f396
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION)-$(PKG_SOURCE_VERSION).tar.gz
 PKG_MIRROR_MD5SUM:=
 CMAKE_INSTALL:=1