Mypy stub fixes for strict optional mode (#366)

stdlib/2and3/logging/handlers.pyi

@@ -104,7 +104,7 @@ class SocketHandler(Handler):
     if sys.version_info >= (3, 4):
         def __init__(self, host: str, port: Optional[int]) -> None: ...
     else:
-        def __init__(self, host: str, port: int) -> None: ...
+        def __init__(self, host: str, port: int) -> None: ...  # type: ignore
     def makeSocket(self) -> SocketType: ...
     def makePickle(self, record: LogRecord) -> bytes: ...
     def send(self, packet: bytes) -> None: ...