预排程退火合并bug修复

rw-aps-server/src/main/java/com/rongwei/rwapsserver/aps/service/impl/ApsServiceImpl.java

@@ -480,7 +480,9 @@ public class ApsServiceImpl implements ApsService {
                 }
 
                 for (ProductionProcesses productionProcesses : apsSolutionTh.getProcessesList()) {
-                    Collections.sort(productionProcesses.getThFzdDelays());
+                    if(productionProcesses.getThFzdDelays() != null && productionProcesses.getThFzdDelays().size() > 0){
+                        Collections.sort(productionProcesses.getThFzdDelays());
+                    }
                 }
             }
         }