[pygobject] g_instance_init: cast to PyGObject * as needed

[Tomeu Vizoso <tomeuv src gnome org>]

commit db24865d6b60351d72f5b8f47103d6d0a6c63b2e
Author: Will Thompson <will thompson collabora co uk>
Date:   Mon Jan 23 13:06:41 2012 +0000

    g_instance_init: cast to PyGObject * as needed
    
    This squashes a compiler warning.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=668497

 gi/_gobject/gobjectmodule.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/gi/_gobject/gobjectmodule.c b/gi/_gobject/gobjectmodule.c
index ac065a5..7ac31f6 100644
--- a/gi/_gobject/gobjectmodule.c
+++ b/gi/_gobject/gobjectmodule.c
@@ -1070,7 +1070,7 @@ pygobject__g_instance_init(GTypeInstance   *instance,
         /* float the wrapper ref here because we are going to orphan it
          * so we don't destroy the wrapper. The next call to pygobject_new_full
          * will take the ref */
-        pygobject_ref_float (wrapper);
+        pygobject_ref_float ((PyGObject *) wrapper);
         args = PyTuple_New(0);
         kwargs = PyDict_New();
         if (Py_TYPE(wrapper)->tp_init(wrapper, args, kwargs))