libdc1394: 2.2.6 -> 2.2.7

pkgs/development/libraries/libdc1394/default.nix

···
 
 stdenv.mkDerivation rec {
   pname = "libdc1394";
-  version = "2.2.6";
+  version = "2.2.7";
 
   src = fetchurl {
     url = "mirror://sourceforge/libdc1394/${pname}-${version}.tar.gz";
-    sha256 = "1v8gq54n1pg8izn7s15yylwjf8r1l1dmzbm2yvf6pv2fmb4mz41b";
+    sha256 = "sha256-U3zreN087ycaGD9KF2GR0c7PhfAlUg5r03WLDhnmYJ8=";
   };
 
   buildInputs = [ libusb1 ]