terminal: Init tab ruler after setting terminal->width
terminal: Init tab ruler after setting terminal->width

terminal_init_tabs() needs an accurate terminal->width to be able
to correctly initialize the tab ruler.

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