fprintf(stdout, "%d - StyleContext\n", gInstanceCount);
StyleContextImpl::~StyleContextImpl(){  mParent = nsnull; // weak ref  NS_IF_RELEASE(mRules);  if (nsnull != mTable) {    delete mTable;    mTable = nsnull;  }#ifdef DEBUG_REFS  --gInstanceCount;  fprintf(stdout, "%d - StyleContext\n", gInstanceCount);#endif}