Facebook Inc said on Saturday it was working to find out how Chinese leader Xi Jinping’s name appeared as “Mr S***hole” in posts on its platform when translated into English from Burmese, apologising for any offence caused and saying the problem had been fixed.The error came to light on the second day of a visit by the president to the Southeast Asian country, where Xi and state counsellor Aung San Suu Kyi signed dozens of agreements covering massive Beijing-backed infrastructure plans.A…