compositor-fbdev: Avoid dereferencing a pointer in freed memory
compositor-fbdev: Avoid dereferencing a pointer in freed memory

fbdev_output_destroy will free the memory passed into in and since we
want to pass the device name into fbdev_output_create we need to save
this to an intermediate value

Fantu/compositor-spice,sir-murray/weston,giucam/weston,mchalupa/weston,krezovic/weston,Tarnyko/weston-xdg_surface_present,eyolfson/weston,Gnurou/weston,Gnurou/weston,jonnylamb/weston,eyolfson/weston,kwm81/weston,mchalupa/weston,krezovic/weston,Fantu/compositor-spice,Fantu/compositor-spice,udoprog/weston,udoprog/weston,kwm81/weston,Tarnyko/weston-xdg_surface_present,xorgy/weston,giucam/weston,sir-murray/weston,jonnylamb/weston,xorgy/weston