NPE in recent file provider if directory does not exist

[petrprochy]

https://pentaho-public.atlassian.net/browse/PDI-19730

[buildguy]

:white_check_mark: Build finished in 33m 47s

Build command:

mvn clean verify -B -e -Daudit -amd -pl engine

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:ok_hand: All tests passed!

Tests run: 4044, Failures: 0, Skipped: 13    Test Results

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:information_source: This is an automatic message

[hitachivantarasonarqube[bot]]

SonarQube Quality Gate

75.0% Coverage on New Code (is less than 80%)

See analysis details on SonarQube

[buildguy]

:x: Build failed in 3m 13s

Build command:

mvn clean verify -B -e -Daudit -amd -Djs.no.sandbox

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:exclamation: No tests found!

:information_source: This is an automatic message