delete mImportantRule;
NS_RELEASE(mImportantRule);
CSSStyleRuleImpl::~CSSStyleRuleImpl(void){#ifdef DEBUG_REFS  gStyleRuleCount--;  printf( "CSSStyleRuleImpl Instances (dtor): %ld\n", (long)gStyleRuleCount);#endif  nsCSSSelector*  next = mSelector.mNext;  while (nsnull != next) {    nsCSSSelector*  selector = next;    next = selector->mNext;    delete selector;  }  if (nsnull != mDeclaration) {    mDeclaration->Release();    mDeclaration = nsnull;  }  if (nsnull != mImportantRule) {    mImportantRule->mSheet = nsnull;    delete mImportantRule;    mImportantRule = nsnull;  }  if (nsnull != mDOMDeclaration) {    mDOMDeclaration->DropReference();  }}