Sometimes, the other team just plays better. The Cubs played a pretty good game Thursday night at Wrigley Field — where, suddenly, it was nearly 80 degrees after being in the 50s the rest of the week. Marcus Stroman returned from the injured list with five decent innings. The bullpen locked it down for the remaining four. But Diamondbacks starter Zac Gallen and four Arizona relievers were just better. Gallen, who has been one of the better starters in the league this year, gave the Cubs just two hits and a run and the Cubs couldn’t get anything going against…