pygobject: avoid startup warnings

Closes Homebrew/homebrew#12513.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Formula/pygobject.rb

@@ -9,6 +9,11 @@ class Pygobject < Formula
   depends_on 'gobject-introspection'
   depends_on 'gtk+'
 
+  # https://bugzilla.gnome.org/show_bug.cgi?id=668522
+  def patches
+    "http://git.gnome.org/browse/pygobject/patch/gio/gio-types.defs?id=42d01f060c5d764baa881d13c103d68897163a49"
+  end
+
   def options
     [["--universal", "Builds a universal binary"]]
   end