MOD aaa-12 解决特定桥名获取错误的问题

SOL     解决特定桥名获取错误的问题
修改人：zhangliang
检视人：zhangliang

Platform/user/configm/config-server/netconfig/bridge/brnetlink.c

@@ -279,7 +279,7 @@ int get_br_from_port(char *port_name , char *br_name)
         if_indextoname(master, if_name);
         rpc_log_info("master:%s\n", if_name);
         
-		if(br_get_bridge_info(if_name, NULL) == 0)
+		if(strlen(if_name) != 0 && br_get_bridge_info(if_name, NULL) == 0)
 		{
 		    strncpy(br_name, if_name, BR_NAMSIZ - 1);
 		    br_name[BR_NAMSIZ - 1] = 0;