pgsql: Fix PQconninfoParse error message handling

Fix PQconninfoParse error message handling

The returned error message already includes a newline, but the callers
were adding their own when printing it out.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/233bfe06735411f08d231764dfd3a6fcf7aef9a3

Modified Files
--------------
src/bin/pg_basebackup/streamutil.c      |    2 +-
src/bin/pg_dump/pg_dumpall.c            |    2 +-
src/bin/scripts/pg_isready.c            |    2 +-
src/interfaces/libpq/test/uri-regress.c |    2 +-
4 files changed, 4 insertions(+), 4 deletions(-)