Fix Zend/tests/type_declarations/variance/class_order_autoload1.phpt

test failre introduced by 44e5c04

This ASSERT-ion path was never reached becuase of the bug fixed by
44e5c04. It's possible in case of
circular class dependencies that may resolved by __autoload().
Unfortunately these circular dependencies can't be stored in the
inheritace cahce.

(cherry picked from commit 18b43d2)

Author: dstogov

ext/opcache/ZendAccelerator.c

@@ -2357,14 +2357,14 @@ static zend_class_entry* zend_accel_inheritance_cache_add(zend_class_entry *ce,
 	while (entry) {
 		entry = zend_accel_inheritance_cache_find(entry, proto, parent, traits_and_interfaces, &needs_autoload);
 		if (entry) {
+			zend_shared_alloc_unlock();
+			SHM_PROTECT();
 			if (!needs_autoload) {
-				zend_shared_alloc_unlock();
-				SHM_PROTECT();
-
 				zend_map_ptr_extend(ZCSG(map_ptr_last));
 				return entry->ce;
+			} else {
+				return NULL;
 			}
-			ZEND_ASSERT(0); // entry = entry->next; // This shouldn't be possible ???
 		}
 	}