ClrStack improvement

[mikeHag]

If I select the option to dump stack object (-dso) ClrStack reads from thread.StackBase to thread.StackLimit looking for "valid objects." The primary filter is
ClrType type = heap.GetObjectType(obj);
if (type == null)
continue;

I've found that the type is not null but looking at the object will cause problems for CLRMD. If I include an additional filter, life is good - at least better. The filter is:
if (!heap.IsInHeap(obj))
continue;