openorienteering-mapper: fix build on darwin

Author: sikmir

pkgs/by-name/op/openorienteering-mapper/package.nix

@@ -31,6 +31,11 @@ stdenv.mkDerivation rec {
       url = "https://github.com/OpenOrienteering/mapper/commit/bc52aa567e90a58d6963b44d5ae1909f3f841508.patch";
       hash = "sha256-pQzw2EfVay+0GOtIbh1KJOkILcj5LRMzmMYy9q+abK4=";
     })
+    # https://github.com/OpenOrienteering/mapper/pull/2337
+    (fetchpatch {
+      url = "https://github.com/OpenOrienteering/mapper/commit/d1f214ee2abf140ae3615a2995f08c19ad81418a.patch";
+      hash = "sha256-eJZpHdFPW7A69aazI+WRSK9N87d4A6x973hMYTHdw5I=";
+    })
   ];
 
   postPatch = ''