修复空指针异常

@@ -78,7 +78,7 @@ public class ActivateUnionRest {
 			vo.setClient_type(ClientTypeEnum.IOS.getName());
 		}
 		String agent = request.getHeader("user-agent");
-		if(StringUtils.isEmpty(agent)){
+		if(StringUtils.isEmpty(agent) && StringUtils.isEmpty(vo.getTd())){
 			log.warn("activateUnion failed. user-agent is null. agent is {}, request vo is {}", agent, vo);
 			return new UnionResponse(200,"success","user-agent is null");
 		}