message: miniheap: big ones aren't meshable
diff: @@ -191,7 +191,7 @@ public:
  inline bool isMeshingCandidate() const {
  if (_refCount > 0)
  mesh::debug("skipping due to MH reference");
  - return !isAttached() && _refCount == 0;
  + return !isAttached() && _refCount == 0 && objectSize() < 4096;
  }
  /// Returns the fraction full (in the range [0, 1]) that this miniheap is.
  