Minor code cleanup in optimizer.

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

Commit: fecb2b00243521a52461ed60ad5e75e443af5e2f
Author: Tom Lane <tgl@sss.pgh.pa.us>
Date: 1999-05-16T19:45:37Z
Releases: 7.1.1
Minor code cleanup in optimizer.

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