A warrant has been issued in Ft. Lauderdale, Fla., for the arrest of singer Bobby Brown after he allegedly violated probation in a drunken-driving case. The husband of superstar Whitney Houston has three fresh strikes against him. Cocaine showed up in a urine test in April, he refused to take another urine test in May, and he didn’t return from a trip to Beverly Hills, Calif., on time, his probation officer reported. Brown, 32, won’t face arrest on the misdemeanor warrant unless he returns to Florida, because prosecutors won’t seek his extradition. He could face up to 90 days in jail.