Update nginxpwner.py

[s0meguy1]

Hi,

I found that on certain sites, I get the error:

[?] Testing all provided paths to check to CRLF injection. This is specially interesting if the site uses S3 buckets or GCP to host files
Traceback (most recent call last):
  File "/root/nginxpwner/./nginxpwner.py", line 226, in <module>
    uri_crlf_test= requests.get(f"{url}/{pathline.strip()}%0d%0aDetectify:%20clrf", verify=False)
  File "/usr/local/lib/python3.10/dist-packages/requests/api.py", line 75, in get
    return request('get', url, params=params, **kwargs)
  File "/usr/local/lib/python3.10/dist-packages/requests/api.py", line 61, in request
    return session.request(method=method, url=url, **kwargs)
  File "/usr/local/lib/python3.10/dist-packages/requests_raw/__init__.py", line 29, in __request
    return _request(self, method, url, *args, **kwargs)
  File "/usr/local/lib/python3.10/dist-packages/requests/sessions.py", line 542, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/local/lib/python3.10/dist-packages/requests/sessions.py", line 655, in send
    r = adapter.send(request, **kwargs)
  File "/usr/local/lib/python3.10/dist-packages/requests/adapters.py", line 439, in send
    resp = conn.urlopen(
  File "/usr/local/lib/python3.10/dist-packages/urllib3/connectionpool.py", line 627, in urlopen
    parsed_url = parse_url(url)
  File "/usr/local/lib/python3.10/dist-packages/urllib3/util/url.py", line 394, in parse_url
    return six.raise_from(LocationParseError(source_url), None)
  File "<string>", line 3, in raise_from
urllib3.exceptions.LocationParseError: Failed to parse: //dist%0D%0ADetectify:%20clrf

I didn't dig into why this was happening, I made a quick fix and added some error correction to line 229