Remove compiler warnings.
Remove compiler warnings.

humdrum-tools/minHumdrum,craigsapp/minHumdrum,craigsapp/humlib,craigsapp/humlib,humdrum-tools/minHumdrum,craigsapp/minHumdrum,humdrum-tools/minHumdrum,craigsapp/humlib,craigsapp/minHumdrum