PyErr_LDB_ERROR_IS_ERR_RAISE

[Julia Lawall]

It is probably not vary important, but the following code in 
source4/lib/ldb/pyldb.c is a bit sloppy:

         if (ret != LDB_SUCCESS) {
                 PyErr_LDB_ERROR_IS_ERR_RAISE(PyExc_LdbError, ret, ldb_ctx);
                 talloc_free(mem_ctx);
                 return NULL;
         }

PyErr_LDB_ERROR_IS_ERR_RAISE tests ret again in the same way and if the 
test succeeds returns, making the rest dead code.

julia