20e0cdbea1
Strictly speaking, what we want to avoid is poisoning buffers that were referenced in a global list as part of the ctor. But, if a buffer indeed got referenced as part of the ctor, it necessarily has to be unreferenced in the dtor; which implies it has to have a dtor. So we want both a ctor and a dtor, and not just one of them. Note that POOL_QUARANTINE already implicitly provides this increased coverage.