ClassListParser::_interfaces should be freed

ClassListParser::ClassListParser(const char* file) {
  ...
  _interfaces = new (ResourceObj::C_HEAP, mtClass) GrowableArray<int>(10, mtClass);
  _indy_items = new (ResourceObj::C_HEAP, mtClass) GrowableArray<const char*>(9, mtClass);
 ...
}

These should be freed inside the destructor.