Removes the polygon offset when drawing the wires entity with Width grater than 1 because the wires are not influenced by the polygon offset but in Direct3D they are drawn as polygons with the geometry shader, so the PolygonOffset applies to them also.

'Declaration
 
Protected Sub RemovePolygonOffset( _
   ByRef prev As Integer _
) 

protected void RemovePolygonOffset( 
   ref int prev
)