Get rid of some minor compiler warnings.

Tom Lane <tgl@sss.pgh.pa.us>

Commit: 990fa43c23997bde923bf8cf6e79486bbac2de3a
Author: Tom Lane <tgl@sss.pgh.pa.us>
Date: 1998-10-26T01:05:07Z
Releases: 7.1.1
Get rid of some minor compiler warnings.

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