Removed some signed/unsigned mismatch warnings.
Removed some signed/unsigned mismatch warnings.

neomonkeus/niflib,neomonkeus/niflib,amorilia/niflib,amorilia/niflib,figment/niflib,niftools/niflib,niftools/niflib,BlazesRus/niflib,niftools/niflib,neomonkeus/niflib,figment/niflib,figment/niflib,BlazesRus/niflib