修复一个集合空指针

haoban-manage3-service/src/main/java/com/gic/haoban/manage/service/service/impl/WelcomeServiceImpl.java

@@ -273,6 +273,9 @@ public class WelcomeServiceImpl implements WelcomeService {
                 welcomeMediaBO.setMediaType(WelcomeMediaTypeEnum.PROGRAM.getCode());
                 welcomeMediaBO.setMiniProgramName(setting.getMiniprogramName());
                 welcomeMediaBO.setMediaUrl(setting.getImageUrl());
+                if (CollectionUtils.isEmpty(welcomeDetail.getWelcomeMediaList())) {
+                    welcomeDetail.setWelcomeMediaList(new ArrayList<>());
+                }
                 welcomeDetail.getWelcomeMediaList().add(welcomeMediaBO);
             }
         }