pgsql: Use saveHistory so we get a nice error message on failure.

Log Message:
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Use saveHistory so we get a nice error message on failure.

Andreas Seltenreich

Modified Files:
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pgsql/src/bin/psql:
input.c (r1.44 -> r1.45)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/bin/psql/input.c.diff?r1=1.44&r2=1.45)