adverb: Don't "pile up" errors if we cannot exec generate-locales
We want to reinstate the old signal mask unconditionally, but we only want to throw an error for it if we weren't already about to throw an error.
/cc @denittis
We want to reinstate the old signal mask unconditionally, but we only want to throw an error for it if we weren't already about to throw an error.
/cc @denittis