Fix typo in memoizing Result#covered_strength
Fix typo in memoizing Result#covered_strength
QuickPay/simplecov,hugopeixoto/simplecov,playpasshq/simplecov,ptashman/simplecov,mallikarjunayaddala/simplecov,irfanah/simplecov,colszowka/simplecov,gerry3/simplecov,colszowka/simplecov