midori: fix file chooser dialog (Ctrl+o)

vcunat: change to double-prefix of the variable, instead of clearing it.

pkgs/applications/networking/browsers/midori/default.nix

@@ -1,5 +1,5 @@
 { stdenv, fetchurl, cmake, pkgconfig, intltool, vala, makeWrapper
-, webkitgtk, librsvg, libnotify
+, gtk3, webkitgtk, librsvg, libnotify
 , glib_networking, gsettings_desktop_schemas
 }:
 
@@ -32,6 +32,6 @@ stdenv.mkDerivation rec {
   postInstall = ''
     wrapProgram $out/bin/midori \
       --prefix GIO_EXTRA_MODULES : "${glib_networking}/lib/gio/modules" \
-      --prefix XDG_DATA_DIRS : "${gsettings_desktop_schemas}/share"
+      --prefix XDG_DATA_DIRS : "${gtk3}/share:${gsettings_desktop_schemas}/share"
   '';
 }