Fixes

Author: kocsismate

ext/standard/var_unserializer.re

@@ -769,8 +769,8 @@ static inline int object_custom(UNSERIALIZE_PARAMETER, zend_class_entry *ce)
 	}
 
 	if (ce->unserialize == NULL) {
-		zend_throw_exception_ex(NULL, 0,  "Class %s has no unserializer", ZSTR_VAL(ce->name));
-		object_init_ex(rval, ce);
+		zend_throw_exception_ex(NULL, 0, "Class %s has no unserializer", ZSTR_VAL(ce->name));
+		return 0;
 	} else if (ce->unserialize(rval, ce, (const unsigned char*)*p, datalen, (zend_unserialize_data *)var_hash) != SUCCESS) {
 		return 0;
 	}