Fix size comparisons in traceloader.cpp.
Fix size comparisons in traceloader.cpp.

This would never result in buffer in overflows, but this is more correct.

tuanthng/apitrace,EoD/apitrace,surround-io/apitrace,tuanthng/apitrace,PeterLValve/apitrace,apitrace/apitrace,swq0553/apitrace,apitrace/apitrace,PeterLValve/apitrace,tuanthng/apitrace,EoD/apitrace,swq0553/apitrace,EoD/apitrace,PeterLValve/apitrace,joshua5201/apitrace,tuanthng/apitrace,trtt/apitrace,trtt/apitrace,surround-io/apitrace,trtt/apitrace,joshua5201/apitrace,apitrace/apitrace,trtt/apitrace,schulmar/apitrace,swq0553/apitrace,schulmar/apitrace,EoD/apitrace,surround-io/apitrace,joshua5201/apitrace,PeterLValve/apitrace,swq0553/apitrace,surround-io/apitrace,trtt/apitrace,schulmar/apitrace,apitrace/apitrace,joshua5201/apitrace,schulmar/apitrace,schulmar/apitrace,swq0553/apitrace,joshua5201/apitrace,surround-io/apitrace,EoD/apitrace,tuanthng/apitrace