message: Fix extract image patches float type issue
diff: @@ -790,7 +790,7 @@ def _ExtractImagePatchesGrad(op, grad):
  sp_mat = sparse_tensor.SparseTensor(
  array_ops.constant(idx, dtype=ops.dtypes.int64),
  - array_ops.ones((len(idx),), dtype=ops.dtypes.float32), sp_shape)
  + array_ops.ones((len(idx),), dtype=grad.dtype), sp_shape)
  jac = sparse_ops.sparse_tensor_dense_matmul(sp_mat, grad_flat)
  