Fix test.

theano/gpuarray/tests/test_dnn.py

@@ -1482,17 +1482,13 @@ def test_dnn_rnn_gru():
                                 model.get_params())
     cudnn_fn, cudnn_grad_fn = funcs(rnnb.apply(params_cudnn, X, h0)[0],
                                     [params_cudnn])
-    # Make a copy of the params
-    params_cudnn2 = gpuarray_shared_constructor(params_cudnn.get_value())
-    y, hy = rnnb.apply(params_cudnn2, X, h0)
     # Test with grad connected to both y and hy
+    y, hy = rnnb.apply(params_cudnn, X, h0)
     cudnn2_fn, cudnn2_grad_fn = funcs((y + hy[-1]) / 2,
                                       [params_cudnn])
 
-    # Make a copy of the params
-    params_cudnn3 = gpuarray_shared_constructor(params_cudnn.get_value())
-    y, hy = rnnb.apply(params_cudnn3, X, h0)
     # Test with grad connected to both y and hy
+    y, hy = rnnb.apply(params_cudnn, X, h0)
     cudnn3_fn, cudnn3_grad_fn = funcs(hy[-1],
                                       [params_cudnn])