fontforge-gtk: update from 20141230 to 20150824

pkgs/tools/misc/fontforge/default.nix

@@ -6,7 +6,7 @@
 }:
 
 let
-  version = "20141230"; # also tagged v2.1.0
+  version = "20150824"; # also tagged v2.1.0
 in
 
 stdenv.mkDerivation {
@@ -14,7 +14,7 @@ stdenv.mkDerivation {
 
   src = fetchurl {
     url = "https://github.com/fontforge/fontforge/archive/${version}.tar.gz";
-    sha256 = "1xfi13knn1x7hd7pvr6090qz6qfa5znbs85rg1p5mfj377z2h8rb";
+    sha256 = "09zzg166lw5ldbzsa2j9x7hizn6y3ld1kf4abfkiy301rdqj9ar8";
   };
 
   patches = [(fetchpatch {