nextcloud-client: fix build with qt 5.12 (#53881)

pkgs/applications/networking/nextcloud-client/default.nix

@@ -1,5 +1,5 @@
 { stdenv, fetchgit, cmake, pkgconfig, qtbase, qtwebkit, qtkeychain, qttools, sqlite
-, inotify-tools, makeWrapper, openssl_1_1, pcre, qtwebengine, libsecret
+, inotify-tools, makeWrapper, openssl_1_1, pcre, qtwebengine, libsecret, fetchpatch
 }:
 
 stdenv.mkDerivation rec {
@@ -13,6 +13,15 @@ stdenv.mkDerivation rec {
     fetchSubmodules = true;
   };
 
+  # Patch contained in next (>2.5.1) release
+  patches = [
+    (fetchpatch {
+     name = "fix-qt-5.12-build";
+     url = "https://github.com/nextcloud/desktop/commit/071709ab5e3366e867dd0b0ea931aa7d6f80f528.patch";
+     sha256 = "14k635jwm8hz6i22lz88jj2db8v5czwa3zg0667i4hwhkqqmy61n";
+     })
+  ];
+
   nativeBuildInputs = [ pkgconfig cmake makeWrapper ];
 
   buildInputs = [ qtbase qtwebkit qtkeychain qttools qtwebengine sqlite openssl_1_1.out pcre inotify-tools ];