i CORINTH, Miss. lt;AP) - Murder charges stand today against Robert Brewer in the fatal shooting of Woodrow WilsonNixon.Sheriff Buford Pusser of Mc-Nairy County, Tenn., just acrosf the Mississippi line, said Nixon, 60, died from bullet wounds. Brewer, about 65, apparently fought after both had been drinking the sheriff said.Both were from Corinth,Miss. The fight occurred outsidethe White Iris, a night club, late Monday night.