SAN FRANCISCO — With one swing, Casey Schmitt got the ultimate redemption. After making outs on the bases in each of the Giants’ past two games , including one early on Saturday that cost them a run, Schmitt quickly made the 38,589 inside Oracle Park forget all about it. Schmitt’s base-running error looked pivotal when he came to the plate with the score tied at 1 in the sixth inning against the Marlins. It became irrelevant as soon as the rocket off his bat landed in the left field for a tie-