bug: crash during triage output

[terriko]

• I'm splitting off a couple of related issues from micrium uC/Lib vulnerability causes cve-bin-tool to delete triage response data from triage input file #4417 since some of these should be fixed in the 3.4 timeline and some will likely wait until after.

From #4417

this test version 3.4rc2 outputs the reports but crashes before making the triage-output file.

This might be related to the comment vs comments problem before -- we may be writing to the wrong field. I'd like this fixed for the 3.4 release.

[tzirn]

v3.4 doesn't crash anymore when the command is correct. however when I accidentally didnt put the extension on the end of the --vest-output parameter it did crash
so using:
--vex-output triage0919.json works
--vex-output triage0191 crashes with a stack dump and then "TypeError: cannot unpack non-iterable NoneType object"
not sure that really matters but perhaps a more graceful exit with an error that states to please specify the file extension would be better if it's easy.
Thanks for doing so much work on this!