配车出现store.getLockFlag()为空的情况，增加一次赋值操作

src/main/java/com/th/demo/service/impl/ware/DistributionServiceImpl.java

         Distribution distribution1 = distributionMapper.selectByTruckNo(distribution.getTruckNo(), belongId);
         for (int i = 0; i < list.size(); i++) {
             Store store = storeMapper.selectByPrimaryKey(list.get(i).getId());
-            if (!store.getLockFlag().equals("1") && distribution1.getId()!= null && !distribution1.getId().equals("")){
+            // 存在赋值为空的情况，追加一次赋值
+            if (store.getLockFlag() == null || store.getLockFlag() == ""){
+                store.setLockFlag("0");
+            }
+            if (!store.getLockFlag().equals("1") && distribution1.getId() != null && distribution1.getId() != ""){
                 list.get(i).setLockFlag("1");
                 num += storeMapper.updateByPrimaryKey(list.get(i));
                 DistributionDetail detail = getDistributionDetail(distribution1, list.get(i), userId, belongId);