By JOE McDONALD BEIJING (AP) — Asian stock markets were mixed Wednesday after Wall Street sank on weak U.S. housing sales and a profit warning by a prominent social media brand. Shanghai and Seoul advanced while Tokyo and Hong Kong declined. Oil prices rose more than $1 per barrel to stay above $110. Wall Street's benchmark S&P 500 index lost 0.8% after the profit warning Tuesday by Snapchat’s parent