#853: fix the NullPointerException by explicitly setting default parent directory

[yurii-yu]

when a parent directory can not be obtained, set "." as it

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1 out of 2 committers have signed the CLA.

✅ yurii-yu
❌ Sheng Yu

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[coveralls]

Pull Request Test Coverage Report for Build 12779116031

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 7 unchanged lines in 1 file lost coverage.
• Overall coverage decreased (-0.02%) to 67.807%

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Files with Coverage Reduction	New Missed Lines	%
com/devonfw/tools/ide/property/PathProperty.java	7	11.94%

Totals
Change from base Build 12770927937:	-0.02%
Covered Lines:	6962
Relevant Lines:	9899

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💛 - Coveralls