Always check whether to wrap when viewport moved
Always check whether to wrap when viewport moved

Because viewport is repositioned when wrapped, the x - priv->viewport_x
may be less than 100 even when the viewport moved more. The check for wrap
should be cheap enough to be performed every time the function is called.

GNOME/libchamplain,StanciuMarius/Libchamplain-map-wrapping,GNOME/libchamplain,StanciuMarius/Libchamplain-map-wrapping,StanciuMarius/Libchamplain-map-wrapping,StanciuMarius/Libchamplain-map-wrapping,StanciuMarius/Libchamplain-map-wrapping