fixed #342/fixed #343 - do not treat directories like regular files in existence checks#339

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firewave wants to merge 3 commits intodanmar:masterfrom

Commits on Aug 23, 2025

added the file/directory existence functions from Cppcheck
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do not treat directories like regular files in existence checks
firewave
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test.cpp: added test to make sure the leak with empty headers no longer occurs
firewave
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