CANADA STOCKS-TSX stumbles as China data disappoints investors

* TSX falls 55.23 points, or 0.39 percent, to 13,932.97 * Nine of the 10 main index sectors decline * RBC has biggest negative influence on index By John Tilak TORONTO, Jan 23 (Reuters) - Canada's main stock index slipped on Thursday after soft manufacturing data from China triggered declines in almost every major sector, overcoming a strong performance by gold-mining shares. The big jump in gold-mining shares, buoyed by a 1.4 percent gain in the price of bullion, failed to