pgsql: pg_dump: Fix quoting of domain constraint names

pg_dump: Fix quoting of domain constraint names

The original code was adding double quotes to an already-quoted
identifier, leading to nonsensical results.  Remove the quoting call.

I introduced the broken code in 7eca575d1c of 9.5 era, so backpatch to
9.5.

Report and patch by Elvis Pranskevichus
Reviewed by Michael Paquier

Branch
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REL9_5_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/1e910cf5baf35721b1d889bd3e976e49e0694857

Modified Files
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src/bin/pg_dump/pg_dump.c |    2 +-
1 file changed, 1 insertion(+), 1 deletion(-)