* Holdings of SPDR Gold Trust GLD, the world's largest gold-backed exchange-traded fund, fell 0.28% to 922.59 tonnes on Friday. Oct 31 (Reuters) - Gold prices were flat on Monday, after declining about 1.3% in the previous session, as investors cautiously awaited the U.S. Federal Reserve's policy meeting for cues on its rate-hike path. * U.S. consumer spending rose more than expected in September while underlying inflation pressures continued to bubble, keeping the Fed on track to hike interest rates by another three-quarters of a percentage point at Nov. 1-2 meet.