Fix regression in 'Wheelswitch' class. If statement logic accidentally inverted.
Fix regression in 'Wheelswitch' class. If statement logic accidentally inverted.

EuropeanSpallationSource/openxal,luxiaohan/openxal-csns-luxh,openxal/openxal,EuropeanSpallationSource/openxal,openxal/openxal,openxal/openxal,openxal/openxal,EuropeanSpallationSource/openxal,luxiaohan/openxal-csns-luxh,openxal/openxal,EuropeanSpallationSource/openxal,luxiaohan/openxal-csns-luxh,EuropeanSpallationSource/openxal,luxiaohan/openxal-csns-luxh