xorg.libX11: Fix spurious Xerror when running synchronized

This backports https://gitlab.freedesktop.org/xorg/lib/libx11/-/merge_requests/264.

This fixes 'XIO: fatal IO error 9 (Bad file descriptor) on X server
":102"' when GNOME's mutter is tearing down.

ref: https://src.fedoraproject.org/rpms/libX11/c/ddc5e3368d876332178857fbdd3dce97fe614f9c
ref: https://gitlab.gnome.org/GNOME/mutter/-/commit/f88b54502c77000d70e30984e7903b808d947049

pkgs/servers/x11/xorg/overrides.nix

@@ -149,6 +149,14 @@ self: super:
 
   libX11 = super.libX11.overrideAttrs (attrs: {
     outputs = [ "out" "dev" "man" ];
+    patches = [
+      # Fix spurious Xerror when running synchronized
+      # https://gitlab.freedesktop.org/xorg/lib/libx11/-/merge_requests/264
+      (fetchpatch {
+        url = "https://gitlab.freedesktop.org/xorg/lib/libx11/-/commit/f3d6ebac35301d4ad068e307f0fbe6aa12ccbccb.patch";
+        hash = "sha256-wQNMsbQ+h9VlNiWr+r34AxvViC8fq02ZhcARRnw7O9k=";
+      })
+    ];
     configureFlags = attrs.configureFlags or []
       ++ malloc0ReturnsNullCrossFlag
       ++ lib.optional (stdenv.targetPlatform.useLLVM or false) "ac_cv_path_RAWCPP=cpp";