Fix attribute persist

Author: nikic

ext/opcache/zend_persist.c

@@ -278,7 +278,9 @@ static HashTable *zend_persist_attributes(HashTable *attributes)
 			zend_accel_store_interned_string(copy->lcname);
 
 			for (i = 0; i < copy->argc; i++) {
-				zend_accel_store_interned_string(copy->args[i].name);
+				if (copy->args[i].name) {
+					zend_accel_store_interned_string(copy->args[i].name);
+				}
 				zend_persist_zval(&copy->args[i].value);
 			}
 

ext/opcache/zend_persist_calc.c

@@ -165,7 +165,9 @@ static void zend_persist_attributes_calc(HashTable *attributes)
 			ADD_INTERNED_STRING(attr->lcname);
 
 			for (i = 0; i < attr->argc; i++) {
-				ADD_INTERNED_STRING(attr->args[i].name);
+				if (attr->args[i].name) {
+					ADD_INTERNED_STRING(attr->args[i].name);
+				}
 				zend_persist_zval_calc(&attr->args[i].value);
 			}
 		} ZEND_HASH_FOREACH_END();