Fix calculation of header size for hash computation. Fixes #206.
Fix calculation of header size for hash computation. Fixes #206.

saynomoo/cecil,sailro/cecil,ttRevan/cecil,kzu/cecil,gluck/cecil,cgourlay/cecil,furesoft/cecil,SiliconStudio/Mono.Cecil,fnajera-rac-de/cecil,jbevain/cecil,joj/cecil,mono/cecil