BUG #13741: vacuumdb does not accept valid password

The following bug has been logged on the website:

Bug reference:      13741
Logged by:          Eric Brown
Email address:      brown@fastmail.com
PostgreSQL version: 9.5beta1
Operating system:   CentOS 6.6
Description:        

I am trying to vacuum a database from a remote computer.  It appears that
vacuumdb is not accepting my password, though psql connects just fine.
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browne1@reslin3 ~/Desktop> vacuumdb -z -j 24 -h reslin1.enhnet.org -p 5433  
                                                      127
vacuumdb: vacuuming database "browne1"
Password: 
Password: 
Password: 
vacuumdb: could not connect to database browne1: FATAL:  password
authentication failed for user "browne1"
browne1@reslin3 ~/Desktop> psql -h reslin1.enhnet.org -p 5433               
                                                        1
Password: 
psql (9.5beta1)
Type "help" for help.

browne1=# 
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