Remove warnings for operations that have no effect when executed repeatedly.

Peter Eisentraut <peter_e@gmx.net>

Commit: a07c5a12250d0a9734de339531f66676b0e4f199
Author: Peter Eisentraut <peter_e@gmx.net>
Date: 2003-09-15T00:26:31Z
Releases: 7.4.1
Remove warnings for operations that have no effect when executed repeatedly.

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