ib/controller: switch to fetchFromGitHub

pkgs/applications/office/ib/controller/default.nix

···
-{ lib, stdenv, fetchurl, unzip, jdk, ib-tws, xpra }:
+{ lib, stdenv, fetchFromGitHub, unzip, jdk, ib-tws, xpra }:
 
 stdenv.mkDerivation rec {
   version = "2.14.0";
   pname = "ib-controller";
 
-  src = fetchurl {
-    url = "https://github.com/ib-controller/ib-controller/archive/${version}.tar.gz";
-    sha256 = "17a8bcgg9z3b4y38k035hm2lgvhmf8srlz59c7n2q3fdw2i95i68";
+  src = fetchFromGitHub {
+    owner = "ib-controller";
+    repo = "ib-controller";
+    rev = version;
+    sha256 = "sha256-R175CKb3uErjBNe73HEFMI+bNmmuH2nWGraCSh5bXwc=";
   };
 
   phases = [ "unpackPhase" "installPhase" ];
···
     fi
     EOF
     chmod u+x $out/bin/ib-gw-c
-    '';
+  '';
 
 
   meta = with lib; {