Fix test

Author: Girgias

ext/ldap/tests/ldap_set_rebind_proc_trampoline.phpt

@@ -46,9 +46,18 @@ var_dump(ldap_set_rebind_proc($link, null));
 var_dump(ldap_set_rebind_proc($link, $callbackWrongType));
 
 var_dump(ldap_unbind($link));
-var_dump(ldap_set_rebind_proc($link, $callback));
+try {
+    var_dump(ldap_set_rebind_proc($link, $callback));
+} catch (Throwable $e) {
+    echo $e::class, ': ', $e->getMessage(), PHP_EOL;
+}
 
 ?>
 --EXPECT--
 bool(true)
 bool(true)
+bool(true)
+bool(true)
+bool(true)
+bool(true)
+Error: LDAP connection has already been closed