fix resizing at top/left border
fix resizing at top/left border

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