Fix lazy loading of methods and fields for #- heap
Fix lazy loading of methods and fields for #- heap

furesoft/cecil,sailro/cecil,jbevain/cecil,ttRevan/cecil,gluck/cecil,joj/cecil,cgourlay/cecil,fnajera-rac-de/cecil,saynomoo/cecil,SiliconStudio/Mono.Cecil,kzu/cecil,mono/cecil,xen2/cecil