Defendant convicted of possession of a firearm by a felon, possession of a stolen firearm, possession of cocaine, and knowingly maintaining a dwelling to keep a controlled substance; issue writ of certiorari; motions to dismiss for insufficiency of evidence; no substantial evidence that Defendant allowed others to resort to his dwelling to use controlled substances; North Carolina General Statutes Section 90-108(a)(7); reversed and remanded in part; North Carolina Rule of Evidence 702; reliability of expert testimony; no plain error