Repetition of warning message while REVOKE

Hi,

Description:
===========
Repetition of warning message with revoke.

How to reproduce :
==================

> create table tbl(col int);
> create user usr;
> grant select on tbl to usr;
> \c postgres usr;
> REVOKE SELECT on tbl from usr;

Actual output:
================
WARNING: no privileges could be revoked for "tbl"
WARNING: no privileges could be revoked for "tbl"
WARNING: no privileges could be revoked for "tbl"
WARNING: no privileges could be revoked for "tbl"
WARNING: no privileges could be revoked for "tbl"
WARNING: no privileges could be revoked for "tbl"
WARNING: no privileges could be revoked for "tbl"
WARNING: no privileges could be revoked for "tbl"
REVOKE

expected output:
===============
Shouldn't print repetitive warnings.

--
Piyush S Newe
Principal Engineer
EnterpriseDB
office: +91 20 3058 9500
www.enterprisedb.com

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