libubox: update to the latest commit with JSON and usock fixes

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>

SVN-Revision: 44052

package/libs/libubox/Makefile

@@ -1,13 +1,13 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=libubox
-PKG_VERSION:=2014-11-23
+PKG_VERSION:=2015-01-19
 PKG_RELEASE=$(PKG_SOURCE_VERSION)
 
 PKG_SOURCE_PROTO:=git
 PKG_SOURCE_URL:=http://git.openwrt.org/project/libubox.git
 PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
-PKG_SOURCE_VERSION:=f09ae76445e32511433fdab0a1bcda73aa84986d
+PKG_SOURCE_VERSION:=f1c794b29e2dac52ec25869bf8c37b3e230fb2a2
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION)-$(PKG_SOURCE_VERSION).tar.gz
 PKG_MIRROR_MD5SUM:=
 CMAKE_INSTALL:=1