Fix performance degradation introduced in c2547ab

Author: Girgias

Zend/zend_hash.c

@@ -658,15 +658,14 @@ ZEND_API void ZEND_FASTCALL zend_hash_iterators_advance(HashTable *ht, HashPosit
 /* Hash must be known and precomputed before */
 static zend_always_inline Bucket *zend_hash_find_bucket(const HashTable *ht, const zend_string *key)
 {
-	zend_ulong key_hash = ZSTR_H(key);
 	uint32_t nIndex;
 	uint32_t idx;
 	Bucket *p, *arData;
 
 	ZEND_ASSERT(key_hash != 0 && "Hash must be known");
 
 	arData = ht->arData;
-	nIndex = key_hash | ht->nTableMask;
+	nIndex = ZSTR_H(key) | ht->nTableMask;
 	idx = HT_HASH_EX(arData, nIndex);
 
 	if (UNEXPECTED(idx == HT_INVALID_IDX)) {
@@ -678,7 +677,7 @@ static zend_always_inline Bucket *zend_hash_find_bucket(const HashTable *ht, con
 	}
 
 	while (1) {
-		if (p->h == key_hash &&
+		if (p->h == ZSTR_H(key) &&
 		    EXPECTED(p->key) &&
 		    zend_string_equal_content(p->key, key)) {
 			return p;