window: Only clamp min size for windows with frame
window: Only clamp min size for windows with frame

Also fix width/height typo.

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