Issue #1264 Don't attempt PopupMenu if getMenu returned False

[ghost]

Change to characterEditor.py:
Added logic to prevent a crash when attempting to execute
self.PopupMenu(menu) when menu was False. This would occur in the
situation where there were no saved implant sets.

---

#1264

Fixed a scenario where spawnMenu in characterEditor.py was attempting to create a list of implant sets even when the list of implant sets contained no items which resulted in a crash.

The new behavior if there are no implant sets is to do nothing. I've put a trace in there but that might be unnecessary and could be removed.

I have built and tested this fix on Windows 7 but don't have access to test on any other platforms.

[codecov-io]

Codecov Report

Merging #1272 into master will decrease coverage by <.01%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##           master    #1272      +/-   ##
==========================================
- Coverage   16.59%   16.59%   -0.01%     
==========================================
  Files        2318     2318              
  Lines       34373    34375       +2     
==========================================
  Hits         5703     5703              
- Misses      28670    28672       +2

[blitzmann]

Thanks! I noticed some other issues with the implant context menu in the character editor, went ahead and applied those fixes as well #1284