PR_STATIC_CALLBACK(PRBool) DeleteRuleNodeChildren(nsHashKey* aKey, void* aData, void* aClosure)
DeleteRuleNodeChildren(PLDHashTable *table, PLDHashEntryHdr *hdr, PRUint32 number, void *arg)
PR_STATIC_CALLBACK(PRBool) DeleteRuleNodeChildren(nsHashKey* aKey, void* aData, void* aClosure){  nsRuleNode* ruleNode = (nsRuleNode*)aData;  ruleNode->Destroy();  return PR_TRUE;}