libidn: Update to 1.31

Signed-off-by: Marcel Denia <naoir@gmx.net>

libs/libidn/Makefile

@@ -8,12 +8,12 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=libidn
-PKG_VERSION:=1.30
+PKG_VERSION:=1.31
 PKG_RELEASE:=1
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
 PKG_SOURCE_URL:=@GNU/libidn
-PKG_MD5SUM:=b17edc8551cd31cc5f14c82a9dabf58e
+PKG_MD5SUM:=83806230fc0989a24cf9dfe6685563d9
 
 PKG_LICENSE:=GPL-2.0+ GPL-3.0+ LGPL-2.1+ LGPL-3.0+ Apache-2.0
 PKG_LICENSE_FILES:=COPYING COPYINGv2 COPYINGv3 COPYING.LESSERv2 COPYING.LESSERv3 java/LICENSE-2.0.txt