AttributeError: 'NoneType' object has no attribute 'status_code'

[edoardottt]

Describe the bug
The program stops and exits with some inputs (unfortunately not always reproducible).

To Reproduce
wafw00f https://ccc-dr-contingent.comcast.com (not always reproducible)

Desktop (please complete the following information):

• OS: Linux
• OS version, distribution: Linux 5.13.0-30-generic #33-Ubuntu SMP
• Python version: 3.9
• Wafw00f version: 2.1.0

Debug output

[*] Checking https://ccc-dr-contingent.comcast.com
[+] Generic Detection results:
ERROR:wafw00f:Something went wrong ('Connection aborted.', ConnectionResetError(104, 'Connection reset by peer'))
Traceback (most recent call last):
  File "/usr/local/bin/wafw00f", line 4, in <module>
    __import__('pkg_resources').run_script('wafw00f==2.1.0', 'wafw00f')
  File "/home/edoardottt/.local/lib/python3.9/site-packages/pkg_resources/__init__.py", line 662, in run_script
    self.require(requires)[0].run_script(script_name, ns)
  File "/home/edoardottt/.local/lib/python3.9/site-packages/pkg_resources/__init__.py", line 1459, in run_script
    exec(code, namespace, namespace)
  File "/usr/local/lib/python3.9/dist-packages/wafw00f-2.1.0-py3.9.egg/EGG-INFO/scripts/wafw00f", line 8, in <module>
    main.main()
  File "/usr/local/lib/python3.9/dist-packages/wafw00f-2.1.0-py3.9.egg/wafw00f/main.py", line 451, in main
    if attacker.genericdetect():
  File "/usr/local/lib/python3.9/dist-packages/wafw00f-2.1.0-py3.9.egg/wafw00f/main.py", line 95, in genericdetect
    if resp1.status_code != resp3.status_code:
AttributeError: 'NoneType' object has no attribute 'status_code'