pgsql: vacuumdb: Schema-qualify operator in catalog query's WHERE claus

vacuumdb: Schema-qualify operator in catalog query's WHERE clause.

Commit 1ab67c9dfa, which modified this catalog query so that it
doesn't return temporary relations, forgot to schema-qualify the
operator. A comment earlier in the function implores us to fully
qualify everything in the query:

* Since we execute the constructed query with the default search_path
* (which could be unsafe), everything in this query MUST be fully
* qualified.

This commit fixes that. While at it, add a newline for consistency
with surrounding code.

Reviewed-by: Noah Misch
Discussion: https://postgr.es/m/ZwQJYcuPPUsF0reU%40nathan
Backpatch-through: 12

Branch
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REL_14_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/ce6f27857bba9e380a10365abf798dfbf453cc31

Modified Files
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src/bin/scripts/vacuumdb.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)