KoResourcePaths: fix regression when enumerating resource directories
Before commit 985ba60e, all checks for extra resource directories were made via QString::split with SkipEmptyParts. This behaviour was removed, which means that if EXTRA_RESOURCE_VARIABLES has an empty value, the resource loader will try to hit an UNC network path for every non-empty folder.
Test Plan
Build Krita. Check that, on Windows at least, there are no exceptions thrown from inside QDir as shown in the bug report.
Formalities Checklist
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I confirmed this builds. -
I confirmed Krita ran and the relevant functions work. -
I tested the relevant unit tests and can confirm they are not broken. (If not possible, don't hesitate to ask for help!) -
I made sure my commits build individually and have good descriptions as per KDE guidelines. -
I made sure my code conforms to the standards set in the HACKING file. -
I can confirm the code is licensed and attributed appropriately, and that unattributed code is mine, as per KDE Licensing Policy.