SAN DIEGO — Sean Manaea didn’t have trouble pitching on four days’ rest, even though his teammates made him pitch a little too much. Manaea kept pitching, and eventually the San Diego Padres made up for their misplays with success in the batter’s box to give him the lead. That advantage, which came from Luke Voit’s three-run homer in the sixth inning, stood as Manaea and four relievers closed out a 4-3 win over Arizona on Saturday night at Petco Park. Manaea allowed four extra-base hits in the first four innings, and three of them were the result of ongoing leaky defense by the Padres. Two dou…