[libpeas] Fix releasing the gil state in the Python loader

[Steve Frécinaux <sfre src gnome org>]

commit 6a3dcd627a57546522c6f4d1f8d9c8526869d7d4
Author: Garrett Regier <alias301 gmail com>
Date:   Mon Mar 7 01:49:04 2011 -0800

    Fix releasing the gil state in the Python loader

 loaders/python/peas-plugin-loader-python.c |   24 ++++++++++--------------
 1 files changed, 10 insertions(+), 14 deletions(-)
---
diff --git a/loaders/python/peas-plugin-loader-python.c b/loaders/python/peas-plugin-loader-python.c
index 571acfb..ffecc14 100644
--- a/loaders/python/peas-plugin-loader-python.c
+++ b/loaders/python/peas-plugin-loader-python.c
@@ -144,7 +144,7 @@ peas_plugin_loader_python_create_extension (PeasPluginLoader *loader,
   PyObject *pyobject;
   PyObject *pyplinfo;
   PyGILState_STATE state;
-  PeasExtension *exten;
+  PeasExtension *exten = NULL;
 
   pyinfo = (PythonInfo *) g_hash_table_lookup (pyloader->priv->loaded_plugins, info);
 
@@ -153,29 +153,23 @@ peas_plugin_loader_python_create_extension (PeasPluginLoader *loader,
   pytype = find_python_extension_type (info, exten_type, pyinfo->module);
 
   if (pytype == NULL)
-    {
-      pyg_gil_state_release (state);
-      return NULL;
-    }
+    goto out;
 
   the_type = pyg_type_from_object ((PyObject *) pytype);
 
   if (the_type == G_TYPE_INVALID)
+    goto out;
+
+  if (!g_type_is_a (the_type, exten_type))
     {
-      pyg_gil_state_release (state);
-      return NULL;
+      g_warn_if_fail (g_type_is_a (the_type, exten_type));
+      goto out;
     }
 
-  /* FIXME: we don't release the gil state here. */
-  g_return_val_if_fail (g_type_is_a (the_type, exten_type), NULL);
-
   object = g_object_newv (the_type, n_parameters, parameters);
 
   if (!object)
-    {
-      pyg_gil_state_release (state);
-      return NULL;
-    }
+    goto out;
 
   pyobject = pygobject_new (object);
   g_object_unref (object);
@@ -188,6 +182,8 @@ peas_plugin_loader_python_create_extension (PeasPluginLoader *loader,
   exten = peas_extension_python_new (exten_type, pyobject);
   Py_DECREF (pyobject);
 
+out:
+
   pyg_gil_state_release (state);
 
   return exten;