bugfix：目录订阅收到更新事件时，sql字段update_time为空导致的报错

lishuyuan

2023-11-02 8bd2f47c9a92ffcf5ae43fae965eaefd4748e263

 src/main/java/com/genersoft/iot/vmp/service/impl/InviteStreamServiceImpl.java

@@ -257,7 +257,7 @@
                ":" + inviteInfo.getDeviceId() +
                ":" + inviteInfo.getChannelId() +
                ":" + inviteInfo.getStream() +
                ":" + inviteInfo.getSsrcInfo().getSsrc();
                ":" + ssrc;
        if (inviteInfoInDb.getSsrcInfo() != null) {
            inviteInfoInDb.getSsrcInfo().setSsrc(ssrc);
        }