At this point, part of Bad Religion's appeal is their utter reliability. Tour after tour and album after album, the consummate L.A. punks have trained audiences thoroughly to know what to expect from them: chainsaw guitar riffs, pointed social commentary and irony-free live performances. Thirty-three years later, it can all seem a little routine at times. In practice, though, punk rock and routines rarely coexist for long. Bad Religion's legendary consistency was put to the test by some touring setbacks Wednesday night at House of Blues, but the band displayed the veteran savvy necessary to hang in there and face down a few curveballs without striking out.