White Sox righty Sean Burke delivering on personal pact during red-hot run

White Sox right-hander Sean Burke doesn’t come off as someone who’s easily angered. He looks mild-mannered and sounds soft-spoken. But after his first two starts of June, Burke was simmering. He lasted no longer than 4 ⅓ innings in either, and he walked five in both. He had entered the season aiming to pound the strike zone and get ahead of hitters, neither of which he did enough last season. He vowed this year would be different, no matter what. “If I’m getting hit around the yard for 15 hits,…