[BUG REPORT] simc test.c gives an unexpected error

[shobhit10058]

Description of the bug
when simc is run with a file not with .simc extension it gives an unexpected error

Traceback (most recent call last):
  File "/home/shobhit/.local/bin/simc", line 8, in <module>
    sys.exit(run())
  File "/home/shobhit/.local/lib/python3.8/site-packages/simc/simc.py", line 25, in run
    error("Incorrect file extension", line_num)
NameError: name 'line_num' is not defined

NameError should not come.

Steps To Reproduce
simply run simc test.c.

Expected behavior
It should simply give Incorrect file extension

[shobhit10058]

We can simply fix it by replacing line_num with -1 or something.

[frankhart2018]

Hey thanks @shobhit10058 for submitting the bug report, do you want to work on this?

[shobhit10058]

yes

[shobhit10058]

I think the suggestion is enough, so should I add it -1.

[frankhart2018]

Yeah that would work, assigning this to you.

[frankhart2018]

Merged.