CANADA STOCKS-TSX little changed as investors eye Fed comment

* TSX up 7.16 points, or 0.05 percent, at 15,484.33 * Five of 10 main index sectors advance * Energy shares climb with oil price By John Tilak TORONTO, Aug 20 (Reuters) - Canada's main stock index was little changed on Wednesday, with weakness in the materials sector offset by gains in industrials, as investors braced themselves for monetary policy commentary from the U.S. Federal Reserve. As minutes from a recent Fed policy meeting are released this afternoon, the market w