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  • Marco Trevisan's avatar
    gspawn, gdataset: Restore nullable callback functions · ff23b242
    Marco Trevisan authored
    As per commit 5d738ddc some callbacks are not nullable anymore even
    though they should be.
    This breaks the introspection as some arguments won't be considered
    nullable anymore.
    You can notice this in
    where some some tests are running against stable g-i version and others
    (the failing ones) against the devel one.