fix

Author: pangyoki

python/paddle/fluid/tests/unittests/test_pylayer_op.py

@@ -487,7 +487,7 @@ def forward(self, data):
  z = layer(data)
  with self.assertRaisesRegexp(
  RuntimeError,
- "received current_inplace_version:{} != inplace_version_snapshot_:{}".
+ "received tensor_version:{} != wrapper_version_snapshot:{}".
  format(1, 0)):
  z.backward()