Fix BattleArmor customization/refit overweight check.

[Setsul]

All the prep work was already done, see line 328-331.
Closes #5185
Closes #846

That's got to be some kind of record, 6 years for a one line fix.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 10.52%. Comparing base (907de4f) to head (bce5f63).
Report is 9 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #5187   +/-   ##
=========================================
  Coverage     10.52%   10.52%           
- Complexity     6044     6047    +3     
=========================================
  Files           957      957           
  Lines        134523   134523           
  Branches      19545    19545           
=========================================
+ Hits          14153    14154    +1     
+ Misses       119021   119018    -3     
- Partials       1349     1351    +2     

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[Scoppio]

yeap, thats a clear bug right there