magic-removal: fixed #1472, removed masking of original exception in transactional decorator

git-svn-id: http://code.djangoproject.com/svn/django/branches/magic-removal@2499 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/db/transaction.py

@@ -192,7 +192,7 @@ def commit_on_success(func):
             except Exception, e:
                 if is_dirty():
                     rollback()
-                raise e
+                raise
             else:
                 if is_dirty():
                     commit()