libhugetlbfs: fix build with recent Glibc

pkgs/development/libraries/libhugetlbfs/default.nix

···
     sha256 = "0ya4q001g111d3pqlzrf3yaifadl0ccirx5dndz1pih7x3qp41mp";
   };
 
+  patches = [
+    (fetchurl {
+      url = "https://build.opensuse.org/public/source/openSUSE:Factory/libhugetlbfs/glibc-2.34-fix.patch?rev=50";
+      sha256 = "sha256-eRQa6M0ZdHMtwA5nnzDTWYv/x4AnRZhj+MpDiwyCvVM=";
+    })
+  ];
+
   outputs = [ "bin" "dev" "man" "doc" "lib" "out" ];
 
   postConfigure = ''