Oil prices were mixed, with no clear ending to the Iran war after more than two months. Some were hoping the Trump-Xi meeting could bring results, after U.S. officials said Beijing could use its close economic ties with Tehran to press Iran to reopen the Strait or Hormuz.On Thursday, the White House said Trump and Xi discussed enhancing U.S.-China economic cooperation. Both sides also agreed that the Strait of Hormuz must remain open.Brent crude, the international standard, was up 0.2% at $105.87 per barrel. It was around $70 a barrel before the war in Iran started late February. That also…