Update threadscanner.py

[roxas-tan]

Fixed error http.client.InvalidURL: URL can't contain control characters

[Neonatus]

The problem persists.

[duanearnett]

This PR fixed an issue I was having with the following error:

[-] Searching Wordpress Plugins ...
0%Exception in thread Thread-1:
Traceback (most recent call last):
  File "/usr/lib/python3.9/threading.py", line 954, in _bootstrap_inner
    self.run()
  File "/usr/local/lib/python3.9/dist-packages/cmsmap/lib/threadscanner.py", line 30, in run
    requester.request(self.url + self.pluginPath + plugin + self.pluginPathEnd, data=None)
  File "/usr/local/lib/python3.9/dist-packages/cmsmap/lib/requester.py", line 31, in request
    self.response = urllib.request.urlopen(self.req)
  File "/usr/lib/python3.9/urllib/request.py", line 214, in urlopen
    return opener.open(url, data, timeout)
  File "/usr/lib/python3.9/urllib/request.py", line 517, in open
    response = self._open(req, data)
  File "/usr/lib/python3.9/urllib/request.py", line 534, in _open
    result = self._call_chain(self.handle_open, protocol, protocol +
  File "/usr/lib/python3.9/urllib/request.py", line 494, in _call_chain
    result = func(*args)
  File "/usr/lib/python3.9/urllib/request.py", line 1375, in http_open
    return self.do_open(http.client.HTTPConnection, req)
  File "/usr/lib/python3.9/urllib/request.py", line 1346, in do_open
    h.request(req.get_method(), req.selector, req.data, headers,
  File "/usr/lib/python3.9/http/client.py", line 1253, in request
    self._send_request(method, url, body, headers, encode_chunked)
  File "/usr/lib/python3.9/http/client.py", line 1264, in _send_request
    self.putrequest(method, url, **skips)
  File "/usr/lib/python3.9/http/client.py", line 1098, in putrequest
    self._validate_path(url)
  File "/usr/lib/python3.9/http/client.py", line 1198, in _validate_path
    raise InvalidURL(f"URL can't contain control characters. {url!r} "
http.client.InvalidURL: URL can't contain control characters. '/wp-content/plugins/worprees plugin bug dar/' (found at least ' ')

After applying @roxas-tan 's fix it works fine for me in this scenario.