Fold multiple of the same error in one case 

For example https://github.com/php-api-clients/github-root/commit/ae4f13ff803fd3cc2cc9d56410e7686f2e63b6ee#diff-73d5100d14cc9c594ec8c3709715b7c661f74c1594a8b05a7d0378034cd9bc99R88-R107 can be handled with multiple cases falling through into one.