  The proofs of Theorem 3.1 and Corollary 4.1 in Le\~ao and Ohashi (2013) are
incomplete. The reason is a wrong statement in Remark 2.2. The hypotheses and
statements of Theorem 3.1 and Corollary 4.1 in Le\~ao and Ohashi (2013) remain
unchanged but the proofs have to be modified. In this short note, we provide
the details.
