Merge pull request #1854 from vannewang/2.7.3

修复CatalogEventLister未判空ServerGBId引发的空指针异常

src/main/java/com/genersoft/iot/vmp/gb28181/event/subscribe/catalog/CatalogEventLister.java

@@ -44,6 +44,9 @@ public class CatalogEventLister implements ApplicationListener<CatalogEvent> {
         Map<String, CommonGBChannel> channelMap = new HashMap<>();
         if (event.getPlatform() != null) {
             parentPlatform = event.getPlatform();
+            if (parentPlatform.getServerGBId() == null) {
+                return;
+            }
             subscribe = subscribeHolder.getCatalogSubscribe(parentPlatform.getServerGBId());
             if (subscribe == null) {
                 return;
@@ -156,4 +159,4 @@ public class CatalogEventLister implements ApplicationListener<CatalogEvent> {
         }
     }
 }
- 
+