New compiler warning

I am seeing a new gcc 12.2.0 compiler warning from
src/backend/commands/sequence.c:

    sequence.c: In function ‘DefineSequence’:
    sequence.c:196:35: warning: ‘coldef’ may be used uninitialized [-Wmaybe-uninitialized]
      196 |                 stmt->tableElts = lappend(stmt->tableElts, coldef);
          |                                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    sequence.c:175:29: note: ‘coldef’ was declared here
      175 |                 ColumnDef  *coldef;
          |                             ^~~~~~

The code is:

    for (i = SEQ_COL_FIRSTCOL; i <= SEQ_COL_LASTCOL; i++)
    {
-->        ColumnDef  *coldef;

        switch (i)
        {
        case SEQ_COL_LASTVAL:
            coldef = makeColumnDef("last_value", INT8OID, -1, InvalidOid);
            value[i - 1] = Int64GetDatumFast(seqdataform.last_value);
            break;
        case SEQ_COL_LOG:
            coldef = makeColumnDef("log_cnt", INT8OID, -1, InvalidOid);
            value[i - 1] = Int64GetDatum((int64) 0);
            break;
        case SEQ_COL_CALLED:
            coldef = makeColumnDef("is_called", BOOLOID, -1, InvalidOid);
            value[i - 1] = BoolGetDatum(false);
            break;
        }

        coldef->is_not_null = true;
        null[i - 1] = false;

-->        stmt->tableElts = lappend(stmt->tableElts, coldef);
    }

and I think it is caused by this commit:

    commit 1fa9241bdd
    Author: Peter Eisentraut <peter@eisentraut.org>
    Date:   Tue Aug 29 08:41:04 2023 +0200
    
        Make more use of makeColumnDef()
    
        Since we already have it, we might as well make full use of it,
        instead of assembling ColumnDef by hand in several places.
    
        Reviewed-by: Alvaro Herrera <alvherre@alvh.no-ip.org>
        Discussion: https://www.postgresql.org/message-id/flat/52a125e4-ff9a-95f5-9f61-b87cf447e4da@eisentraut.org

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  Bruce Momjian  <bruce@momjian.us>        https://momjian.us
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