gnurl: add forgotten MD5SUM

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

net/gnurl/Makefile

@@ -14,7 +14,7 @@ PKG_RELEASE:=1
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
 PKG_SOURCE_URL:=https://gnunet.org/sites/default/files
 
-# PKG_MD5SUM:=8d30594212e65657a5c32030f0998fa9
+PKG_MD5SUM:=f816deb0c1401c841780ec6b91985a14
 
 PKG_LICENSE:=MIT
 PKG_LICENSE_FILES:=COPYING