Make xargs to ignore commands if stdin is empty #17027
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When we added a new gem, REMOVED_GEMS was empty, and the `basename` command crashed. Not anymore. When there is nothing coming from ADDED_GEMS (because we remove the gem) or REMOVED_GEMS (because we add a new gem) `xargs` will not crash anymore.
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When we added a new gem, REMOVED_GEMS was empty, and the
basenamecommand crashed. Not anymore.When there is nothing coming from ADDED_GEMS (because we remove the gem) or REMOVED_GEMS (because we add a new gem)
xargswill not crash anymore.