pgsql: Attempt to fix compiler warning on old compiler

Attempt to fix compiler warning on old compiler A couple more like b449afb582bb9015bfbb85abc10ce122aef9ec70, per complaints from lapwing. Branch -- master Details --- https://git.postgresql.org/pg/commitdiff/506428d091760650971433f6bc083531c307b368 Modified Files -- contrib/

pgsql: Attempt to fix compiler warning on old compiler

Attempt to fix compiler warning on old compiler Build farm member lapwing (using gcc 4.7.2) didn't like one part of 9fd45870c1436b477264c0c82eb195df52bc0919, raising a compiler warning. Revert that for now. Branch -- master Details --- https://git.postgresql.org/pg/commitdiff/b449afb582b