Fixed error: extra qualification on member 'bvh_node'

Author: trevordblack

src/TheNextWeek/bvh.h

@@ -18,7 +18,7 @@
 
 class bvh_node : public hittable  {
     public:
-        bvh_node::bvh_node(hittable_list& list, double time0, double time1)
+        bvh_node(hittable_list& list, double time0, double time1)
             : bvh_node(list.objects, 0, list.objects.size(), time0, time1)
         {}