Merge pull request matplotlib#7348 from dopplershift/fix-7313

BUG: Fix Axes3D.plot_surface with no edgecolor (Fixes matplotlib#7313)

Author: WeatherGod

lib/mpl_toolkits/mplot3d/art3d.py

@@ -621,7 +621,8 @@ def do_3d_projection(self, renderer):
  if len(cedge) != len(xyzlist):
  if len(cedge) == 0:
  cedge = cface
- cedge = cedge.repeat(len(xyzlist), axis=0)
+ else:
+ cedge = cedge.repeat(len(xyzlist), axis=0)
 
  # if required sort by depth (furthest drawn first)
  if self._zsort: