Apply some unfortunate optimizations to buffer.read_ functions.
Apply some unfortunate optimizations to buffer.read_ functions.

GraylinKim/sc2reader,StoicLoofah/sc2reader,vlaufer/sc2reader,vlaufer/sc2reader,ggtracker/sc2reader,StoicLoofah/sc2reader,ggtracker/sc2reader,GraylinKim/sc2reader