Critical slots for cargo incorrectly displayed in Unallocated Equipment list

[assaultdoor]

Using MML 0.47.4 on OS X, the Unallocated Equipment list on the IndustrialMech Assign Criticals tab doesn't show the correct number of critical slots for a Cargo item. Cargo should be 1 critical slot per ton, but the Unallocated Equipment list always shows it as 1 critical slot. Cargo occupies the correct number of slots when assigned to a location. It's just the display in the Unallocated Equipment list that is wrong.