Fixed #11957 -- exceptions in admin.py are no longer hidden after second request

Before you had to restart runserver for the correct exception message to show
up again. Reverts fix in r9680 which has this side-affect.

Thanks to jarrow, carljm and ramiro for their work on the patch and tickets.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@12956 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/regressiontests/bug8245/tests.py

@@ -18,6 +18,13 @@ class Bug8245Test(TestCase):
         else:
             self.fail(
                 'autodiscover should have raised a "Bad admin module" error.')
-        # Calling autodiscover again should bail out early and not raise an
-        # AlreadyRegistered error.
-        admin.autodiscover()
+
+        # Calling autodiscover again should raise the very same error it did
+        # the first time, not an AlreadyRegistered error.
+        try:
+            admin.autodiscover()
+        except Exception, e:
+            self.failUnlessEqual(str(e), "Bad admin module")
+        else:
+            self.fail( 
+                'autodiscover should have raised a "Bad admin module" error.')