lib/cloud_crowd/models/work_unit.rb in cloud-crowd-0.2.4 vs lib/cloud_crowd/models/work_unit.rb in cloud-crowd-0.2.5

@@ -44,10 +44,10 @@
           end
         end
         work_units.push(unit)
       end
     ensure
-      WorkUnit.cancel_reservations(reservation_number)
+      WorkUnit.cancel_reservations(reservation_number) if reservation_number
     end
     
     # Reserves all available WorkUnits for this process. Returns false if there 
     # were none available.
     def self.reserve_available