CHICAGO — Bears linebacker Matt Adams was arrested Thursday night in Chicago on a misdemeanor charge of unlawful firearm possession, according to police. He also was cited for having high-capacity magazines and metal-piercing bullets, a violation of city code. Police said Adams was arrested at approximately 6:46 p.m. in the 200 block of North Garland Court in the Loop. The magazines were found during a search of his car, and the weapon also was recovered, according to police. He has a court date set for Aug. 24. The Bears acknowledged the arrest in a statement. “Earlier this morning, we were m…