Re: lily: fix some type conversion warnings (issue 557190043 by hanwenn@gmail.com)

[hanwenn]

commit 4d93339b06f97dcec176a47d9db0fc169acccef6
Author: Han-Wen Nienhuys <han...@lilypond.org>
Date:   Fri Jan 17 23:42:28 2020 +0100

    lily: fix some type conversion warnings


https://codereview.appspot.com/557190043/