Roberto Oliveira authored Apr 04, 2017 and Jakub Jirutka committed Apr 04, 2017

mosh was breaking when building in ppc64le using musl, because ioctl() is defined
as ioctl(int, int) in musl and mosh is using TIOCSWINSZ macro as parameter. This was
triggering a gcc warning and make the build fail.

This patch does an explicit integer conversion in TIOCSWINSZ, as no bits get
lost.