Updater:Mac: Show tar stderr if it fails #10227
Merged
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Description of Changes
Prints stderr from tar command if it fails
Rationale behind Changes
User came to us with the updater failing due to being unable to unpack the update, maybe seeing the stderr from tar will help
Suggested Testing Steps
Untested, but it hopefully won't be worse than the current error message
(If anyone can think of a way to make tar fail while creating the staging directory succeeds, please test that)