demangle: Don't rely on buffer length for content length
demangle: Don't rely on buffer length for content length

emil-e/rapidcheck,whoshuu/rapidcheck,unapiedra/rapidfuzz,unapiedra/rapidfuzz,unapiedra/rapidfuzz,emil-e/rapidcheck,whoshuu/rapidcheck,emil-e/rapidcheck,tm604/rapidcheck,tm604/rapidcheck,tm604/rapidcheck,whoshuu/rapidcheck