Oil market edgy on U.S. crude build, trade deal angst

SEOUL (Reuters) - Oil prices trod water on Thursday after losses in the previous session, as traders were cautious amid concerns over a potential delay in sealing a long-awaited interim U.S.-China trade deal and a huge increase of U.S. crude stockpiles.Brent crude futures were down 3 cents, at $61.71 a barrel by 0348 GMT after settling down $1.22 per barrel, or almost 2% on Wednesday.West Texas Intermediate crude futures were at $56.29 a barrel, down 2 cents, from their last close. They..