return NS_OK; }
if (entry) { entry->mContent = aContent; entry->mTemplate = aTemplate; } }
ContentSupportMap::Put(nsIContent* aElement, Match* aMatch){    PLHashEntry* he = PL_HashTableAdd(mMap, aElement, nsnull);    if (! he)        return NS_ERROR_OUT_OF_MEMORY;    // "Fix up" the entry's value to refer to the mMatch that's built    // in to the Entry object.    Entry* entry = NS_REINTERPRET_CAST(Entry*, he);    entry->mHashEntry.value = &entry->mMatch;    entry->mMatch = aMatch;    aMatch->AddRef();    return NS_OK;}