[HACKERS] A suspicious code in pgoutput_startup().

Hi,

I found a suspicious code in pgoutput_startup().

175         /* Check if we support requested protocol */
176         if (data->protocol_version != LOGICALREP_PROTO_VERSION_NUM)
177             ereport(ERROR,
178                     (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
179                      errmsg("client sent proto_version=%d but we only support protocol %d or lower",
180                             data->protocol_version, LOGICALREP_PROTO_VERSION_NUM)));

Although the if condition is not-equal, the error message says 
"we only support protocol %d or lower".  Is this intentional?
Or should this be fixed as below? 

176         if (data->protocol_version > LOGICALREP_PROTO_VERSION_NUM)

Attached is a simple patch in case of fixing.

Regards,

-- 
Yugo Nagata <nagata@sraoss.co.jp>

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