tinc: fix missing HASH

Signed-off-by: Erwan MAS <erwan@mas.nom.fr>

net/tinc/Makefile

@@ -16,7 +16,7 @@ PKG_SOURCE_URL:=http://tinc-vpn.org/git/tinc
 PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
 PKG_SOURCE_VERSION:=3ee0d5dd
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION)-$(PKG_SOURCE_VERSION).tar.gz
-PKG_MIRROR_MD5SUM:=
+PKG_MIRROR_HASH:=fe57dcce5c17ec2cea96fefc69c5af977df7d457f1ae7c4775e00a21878a2c19
 
 PKG_CPE_ID:=cpe:/a:tinc:tinc