qcachegrind: Fix build with Qt 5.10

pkgs/development/tools/analysis/qcachegrind/default.nix

···
-{ stdenv, fetchurl, cmake, qmake, qtbase, perl, python, php, kcachegrind }:
+{ stdenv, fetchurl, cmake, qmake, qtbase, perl, python, php, kcachegrind, fetchpatch }:
 
 let
   name = stdenv.lib.replaceStrings ["kcachegrind"] ["qcachegrind"] kcachegrind.name;
···
   buildInputs = [ qtbase perl python php ];
 
   nativeBuildInputs = [ qmake ];
+
+  patches = [
+    (fetchpatch {
+      name = "fix-qt5_10-build.patch";
+      url = https://github.com/KDE/kcachegrind/commit/c41607a.patch;
+      sha256 = "00kh5im3hpcarch8rc2dsgxsajfmd8vd7rry9x6mxrbkgr4ifq8y";
+    })
+  ];
 
   postInstall = ''
      mkdir -p $out/bin