Fix cp2k inp

[ndaelman-hu]

Fix a loophole in the logic where CP2K tries to access an empty list of (restarted) input files.

Prompted by user Max Graml. Here's a screenshot of the failing logs:

[coveralls]

Pull Request Test Coverage Report for Build 12358226647

Details

• 4 of 7 (57.14%) changed or added relevant lines in 2 files are covered.
• 2 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.002%) to 93.065%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
electronicparsers/cp2k/parser.py	3	6	50.0%

Files with Coverage Reduction	New Missed Lines	%
electronicparsers/cp2k/parser.py	2	80.77%

Totals
Change from base Build 12295475826:	-0.002%
Covered Lines:	35816
Relevant Lines:	38485

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💛 - Coveralls

[ndaelman-hu]

@ladinesa could we see to roll this out for Max/

[ladinesa]

@ladinesa could we see to roll this out for Max/

i can create a release, but I am sure it will trigger some compatibility issues again in nomad... but I think it is perfect time to have issues since it is the holidays. are you sure you have all fixes in now in develop?

[ndaelman-hu]

but I think it is perfect time to have issues since it is the holidays.

Let's wait for the new year then. I'll inform Max.

are you sure you have all fixes in now in develop?

The other failed calculations had the same error.

[ladinesa]

please advise when I should make a release.