fix PR

the unbroadcast(shape_padleft(x)) might not be of the same type as x, specifically when x is CudaNdarrayTyepe, unbroadcast(shape_padleft(x)) is a TensorType.

fix PR
91f2ac84 · Razvan Pascanu · b7147242 · 91f2ac84
--- a/theano/scan_module/scan_op.py
+++ b/theano/scan_module/scan_op.py
@@ -248,9 +248,6 @@ class Scan(PureOp):
                rval = rval.astype(as_var.type.dtype)
            if rval.ndim == as_var.ndim:
                rval = as_var.type.filter_variable(rval)
-            else:
-                tmp = tensor.unbroadcast(tensor.shape_padleft(as_var), 0)
-                rval = tmp.type.filter_variable(rval)
            return rval

        # Check if input sequences and variables representing a slice of