Fix for сlosing message formatting

[jolaf]

Fixes #276.

[auvipy]

we got a regression report for this change #292

and test_parse_unix_schemes (test.test_client.BasicClientTest) ... /home/runner/work/WebSocket-for-Python/WebSocket-for-Python/test/test_client.py:37: ResourceWarning: unclosed <socket.socket fd=3, family=AddressFamily.AF_UNIX, type=SocketKind.SOCK_STREAM, proto=0>
c = WebSocketBaseClient(url="wss+unix:///my.socket")
/opt/hostedtoolcache/Python/3.6.15/x64/lib/python3.6/unittest/case.py:605: ResourceWarning: unclosed <socket.socket fd=4, family=AddressFamily.AF_UNIX, type=SocketKind.SOCK_STREAM, proto=0>
testMethod()
ok
test_parse_ws_scheme (test.test_client.BasicClientTest) ... /opt/hostedtoolcache/Python/3.6.15/x64/lib/python3.6/unittest/case.py:605: ResourceWarning: unclosed <socket.socket fd=3, family=AddressFamily.AF_INET, type=SocketKind.SOCK_STREAM, proto=6, laddr=('0.0.0.0', 0)>
testMethod()
ok
test_parse_ws_scheme_when_missing_resource (test.test_client.BasicClientTest) ... ok
test_parse_ws_scheme_with_port (test.test_client.BasicClientTest) ... ok
test_parse_ws_scheme_with_query_string (test.test_client.BasicClientTest) ... ok
test_parse_wss_scheme (test.test_client.BasicClientTest) ... ok
test_parse_wss_scheme_when_missing_resource (test.test_client.BasicClientTest) ... ok
test_parse_wss_scheme_with_port (test.test_client.BasicClientTest) ... ok
test_parse_wss_scheme_with_query_string (test.test_client.BasicClientTest) ... ok
test_thread_is_started_once_connected (test.test_client.ThreadedClientTest) ... Exception in thread WebSocketClient:
Traceback (most recent call last):
File "/opt/hostedtoolcache/Python/3.6.15/x64/lib/python3.6/threading.py", line 916, in _bootstrap_inner
self.run()
File "/opt/hostedtoolcache/Python/3.6.15/x64/lib/python3.6/threading.py", line 864, in run
self._target(*self._args, **self._kwargs)
File "/home/runner/work/WebSocket-for-Python/WebSocket-for-Python/ws4py/websocket.py", line 528, in run
if not self.once():
File "/home/runner/work/WebSocket-for-Python/WebSocket-for-Python/ws4py/websocket.py", line 410, in once
if not self.process(self.buf[:requested]):
File "/home/runner/work/WebSocket-for-Python/WebSocket-for-Python/ws4py/websocket.py", line 465, in process
logger.debug("Closing message received (%d): %s" % (s.closing.code, s.closing.reason.decode() if isinstance(s.closing.reason, bytes) else s.closing.reason))
TypeError: isinstance() arg 2 must be a type or tuple of types

ok
test_thread_is_started_once_connected_secure (test.test_client.ThreadedClientTest)
Same as the above test, but with SSL socket ... Exception in thread WebSocketClient:
Traceback (most recent call last):
File "/opt/hostedtoolcache/Python/3.6.15/x64/lib/python3.6/threading.py", line 916, in _bootstrap_inner
self.run()
File "/opt/hostedtoolcache/Python/3.6.15/x64/lib/python3.6/threading.py", line 864, in run
self._target(*self._args, **self._kwargs)
File "/home/runner/work/WebSocket-for-Python/WebSocket-for-Python/ws4py/websocket.py", line 528, in run
if not self.once():
File "/home/runner/work/WebSocket-for-Python/WebSocket-for-Python/ws4py/websocket.py", line 410, in once
if not self.process(self.buf[:requested]):
File "/home/runner/work/WebSocket-for-Python/WebSocket-for-Python/ws4py/websocket.py", line 465, in process
logger.debug("Closing message received (%d): %s" % (s.closing.code, s.closing.reason.decode() if isinstance(s.closing.reason, bytes) else s.closing.reason))
TypeError: isinstance() arg 2 must be a type or tuple of types