Fix warning: instance variable @exit_status not initialized
Fix warning: instance variable @exit_status not initialized

QuickPay/simplecov,mallikarjunayaddala/simplecov,irfanah/simplecov,gerry3/simplecov,colszowka/simplecov,hugopeixoto/simplecov,ptashman/simplecov,playpasshq/simplecov,colszowka/simplecov