vdr: 2.6.3 -> 2.6.4

pkgs/applications/video/vdr/default.nix

···
 }: stdenv.mkDerivation rec {
 
   pname = "vdr";
-  version = "2.6.3";
+  version = "2.6.4";
 
   src = fetchgit {
     url = "git://git.tvdr.de/vdr.git";
     rev = version;
-    sha256 = "sha256-SDaNk8tDaO70+V7sozMGTCzpnOqa52xdEQPURkyuTt8=";
+    sha256 = "sha256-QCq+IxulrxDX+fzI+IHywboemJQnUfZrHRzP6B9qfvk=";
   };
 
   enableParallelBuilding = true;