pcr point segment case in construction is modified

when point is end of segment, now we have the ray with
two linear components.
example:
h3.cin A 0,0 AB 0,0 100, 0 C 0,50
pcr for A , AB, C will be
p[0]= -25, 25
p[1]= 0,0
and d=-1,-1

sdgap/include/CGAL/Segment_Delaunay_graph_Linf_2/Constructions_C2.h

@@ -661,8 +661,9 @@ public:
       
       if (are_same_points(sitep,sites.source_site())
           or are_same_points(sitep,sites.target_site())) {
-        npts = 1;	
+        npts = 2;
         points[0] = v;
+        points[1] = pnt;
         Point_2 pseg = 
           (are_same_points(sitep,sites.source_site())) ? 
             seg.target() : seg.source();