[Bug] `nsp.py --help` executes internal methods, not only shows help

[introkun]

Describe the bug nsp.py --help executes internal methods, not only shows help

To Reproduce Steps to reproduce the behavior:

1. run nsp.py --help

Expected behaviour You will see in the console loaded user guest

Expected behaviour Only help message must be printed, no internal logic must be executed

NUT version (or git hash):

• 3.0
• Git hash 8efeac6