pgsql: Give a proper error message if initdb password file is empty.

Give a proper error message if initdb password file is empty.

Used to say just "could not read password from file "...": Success", which
isn't very informative.

Mats Erik Andersson. Backpatch to all supported versions.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/198cbe0a0c4b539c9f9f3f2e9169d774d1d39a8e

Modified Files
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src/bin/initdb/initdb.c |    8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)