reroute socket doesn't handle certain socket inputs / outputs

Created by: zeffii

location: <unknown location>:-1
Traceback (most recent call last):
  File "C:\Users\zeffi\Desktop\scripts\addons_contrib\sverchok\node_tree.py", line 279, in draw
    layout.label(t + '. ' + SvGetSocketInfo(self))
  File "C:\Users\zeffi\Desktop\scripts\addons_contrib\sverchok\core\socket_data.py", line 54, in SvGetSocketInfo
    s_id = socket.other.socket_id
AttributeError: 'NoneType' object has no attribute 'socket_id'

try

Sphere.verts -> Viz.verts
Sphere.edges -> Reroute -> Viz.edges