Oil prices slides as U.S. crude stockpile growth heightens oversupply fears

TOKYO (Reuters) - Oil futures dropped on Wednesday, extending losses from the previous day, after U.S. crude stockpiles grew more than expected, adding to worries about oversupply.Brent crude was down 29 cents, or 0.7%, at $42.34 a barrel by 0335 GMT, while U.S. West Texas Intermediate (WTI) crude futures fell 35 cents, or 0.9%, to $40.02 a barrel.U.S. crude inventories rose by a much bigger than expected 1.7 million barrels last week, according to industry group the American Petroleum..