gstreamer: 1.10.1 -> 1.10.2 for multiple CVEs

CVE-2016-9807, CVE-2016-9808, CVE-2016-9809, CVE-2016-9810, CVE-2016-9811, CVE-2016-9812, CVE-2016-9813, CVE-2016-9634, CVE-2016-9635, CVE-2016-9636

https://gstreamer.freedesktop.org/releases/1.10/#1.10.2

pkgs/development/libraries/gstreamer/libav/default.nix

@@ -9,7 +9,7 @@
 assert withSystemLibav -> libav != null;
 
 stdenv.mkDerivation rec {
-  name = "gst-libav-1.10.1";
+  name = "gst-libav-1.10.2";
 
   meta = {
     homepage = "http://gstreamer.freedesktop.org";
@@ -19,7 +19,7 @@ stdenv.mkDerivation rec {
 
   src = fetchurl {
     url = "${meta.homepage}/src/gst-libav/${name}.tar.xz";
-    sha256 = "1ivjbh5g0l5ykfpc16kq5x2jz8d4ignyha14jpiz3pz6w26qpci7";
+    sha256 = "0g778j7w4vpbhwjzyrzpajvr26nxm6vqby84v8g1w1hz44v71pd3";
   };
 
   outputs = [ "out" "dev" ];