1、fixed PortWaferStart notify event parameter carrierId is null

Venus/Venus_RT/Modules/Autotransfer_LP_FA.cs

@@ -190,7 +190,7 @@ namespace Venus_RT.Modules
                     {DVIDName.JobID,  cj.Name},
                     {DVIDName.PortID, PortId[module] },
                     {DVIDName.SlotID, (slotID+1).ToString() },
-                    {DVIDName.CarrierID, cj.CarrierID?.ToString()},
+                    {DVIDName.CarrierID, cj.CarrierID==null?"":cj.CarrierID.ToString()},
                     {DVIDName.SequenceID,waferInfo.SequenceName }
                 });
             }
@@ -209,7 +209,7 @@ namespace Venus_RT.Modules
                     {DVIDName.JobID,  cj.Name},
                     {DVIDName.PortID, PortId[module] },
                     {DVIDName.SlotID, (slotID+1).ToString() },
-                    {DVIDName.CarrierID, cj.CarrierID?.ToString()},
+                    {DVIDName.CarrierID, cj.CarrierID==null?"":cj.CarrierID.ToString()},
                     {DVIDName.WaferProcessResult, (wafer.ProcessState == EnumWaferProcessStatus.Failed ? 0:1).ToString()},
                     {DVIDName.SequenceID,wafer.SequenceName }
                 });