Disaster movies tend to inhabit the close-but-not-too-close realm of the ‘what if?’, but Quentin Reynaud’s taut drama evokes a reality that is painfully immediate, as the world combusts around us       Alex Lutz (recently seen as the son in Gaspar Noé’s Vortex) plays a man determined to escape with his elderly father (the ineffable André Dussollier) from a wildfire that is rapidly a