Fix crashes introduced in this PR.

theano/sandbox/gpuarray/opt.py

@@ -249,7 +249,7 @@ def local_gpua_incsubtensor(node):
 def local_gpua_careduce(node):
     if (isinstance(node.op.scalar_op, scalar.basic.Add) or
         isinstance(node.op.scalar_op, scalar.basic.Mul)):
-
+        x, = node.inputs
         greduce = GpuCAReduce(node.op.scalar_op, axis=node.op.axis)
         if greduce.supports_c_code([gpu_from_host(x)]):
             return greduce

theano/tensor/nnet/nnet.py

@@ -1398,7 +1398,7 @@ def _check_rows_is_arange_len_labels(rows, labels):
             shape_subtensor = stop.owner
             if list(shape_subtensor.op.idx_list) == [0]:
                 shape_var, = shape_subtensor.inputs
-                if shape_var.owner and shape_var.owner.op == tensor._shape:
+                if shape_var.owner and shape_var.owner.op == tensor.shape:
                     return shape_var.owner.inputs[0] is labels
         else:
             shape_of = stop.owner.fgraph.shape_feature.shape_of