Issue 5705: Cast to silence warning in Stem::get_beaming () (issue 565610043 by address@hidden)

[hanwenn]

LGTM

thanks!


https://codereview.appspot.com/565610043/diff/559450051/lily/stem.cc
File lily/stem.cc (right):

https://codereview.appspot.com/565610043/diff/559450051/lily/stem.cc#newcode99
lily/stem.cc:99: // we confident that the list is short?
Yes, I'm confident about that.

// This list represents the vertical positions at which beams
// start/end at this stem, so the O(N) cost of scm_ilength is 
// fine.

https://codereview.appspot.com/565610043/