/usr/lib/GNUstep/Bundles/MDIndexing.prefPane/Resources is in mdfinder.app 0.9.2-1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/GNUstep/Bundles/MDIndexing.prefPane/../../../../share/GNUstep/MDIndexing.prefPane