minor fix

邮件批量发送.py

@@ -308,11 +308,12 @@ def main():
                             case hour if 6  <= hour < 12: hello = registry[0]
                             case hour if 12 <= hour < 18: hello = registry[1]
                             case hour if 18 <= hour < 21: hello = registry[2]
-                            case _: hello = locale.get('default')
+                            case _: hello = None
 
                         iframe = driver.switch_to.active_element
                         action = ActionChains(driver)
                         clean = False
+                        hello = hello or locale.get('default')
 
                         if name is not None and (name := str(name).strip()) and not contains_non_latin_alphabet(name):
                             parts = HumanName(name)