FIXED:11370 extrude sop,Cusp polygonal sides cause crash.

2019:11370 extrude sop,Cusp polygonal sides cause crash.
files added.
CrashAutoSave.NewProject.1.toe (4 KB)
TouchDesignerCrash099.x64.2019.11370.1.dmp (185 KB)

Thanks for the example. This will be fixed in the next experimental build.