XLIFF2 Filter for OmegaT adds gigabytes of whitespace, crashing OmegaT file writer

[christian.preinesberger]

In the target file, every <unit> is indented by an additional space, see attachment.

At ~30 000 units (5MB source file) the target filesize reaches 4GB and OmegaT cannot write the target file anymore.
Version: okapiFiltersForOmegaT-1.10-1.42.0