RuleMixin: Don't compensate on frozen if quantity is 0

product/ERP5/mixin/rule.py

@@ -331,6 +331,9 @@ class RuleMixin(Predicate):
         if decision_movement.isFrozen():
           # Frozen must be compensated
           if not _compare(divergence_tester_list, prevision_movement, decision_movement):
+            if not decision_movement_quantity:
+              # We don't compensate if compensated quantity is 0
+              continue
             new_movement = decision_movement.asContext(
                                   quantity=-decision_movement_quantity)
             new_movement.setDelivery(None)