FORMER Madagascar president Marc Ravalomanana said he had sustained a leg injury when police and soldiers fired teargas to disperse a gathering of his supporters and those of other candidates challenging the incumbent president. Ravalomanana, who is among 11 candidates cleared to challenge President Andry Rajoelina in elections set for Nov. 9, showed on his Facebook page a photo of an injury on his left leg with blood dripping from it. It was not immediately clear what specifically caused the injury. A spokesperson for Ravalomanana did not immediately respond when sought for comment. Police and other government officials were not…