"BinaryObject.h was implicitly converting between uint{16,32,64}_t to

uint8_t (via 'foo & 255'), i replaced this with an explicit (uint8_t)
cast which is equivalent, faster and more correct (silences
type-related warnings). Also, following coding standards I replaced
post-increment with pre-increment."

Patch by Ryan Flynn!

llvm-svn: 74929