BUG #5955: One-click installer does not escape password

The following bug has been logged online:

Bug reference:      5955
Logged by:          Rob Grant
Email address:      rob@occipital.com
PostgreSQL version: 9.0
Operating system:   OS X
Description:        One-click installer does not escape password
Details:

I provided the one-click installer a password that included a double quote.
This caused the following errors:

Error running /Library/PostgreSQL/9.0/installer/server/initcluster.sh
"postgres" "postgres" "****" "/Library/PostgreSQL/9.0"
"/Library/PostgreSQL/9.0/data" 5432 DEFAULT : /bin/sh: -c: line 0:
unexpected EOF while looking for matching `"'

Error running /Library/PostgreSQL/9.0/installer/server/loadmodules.sh
"postgres" "postgres" "****" "/Library/PostgreSQL/9.0" 5432 : /bin/sh: -c:
line 0: unexpected EOF while looking for matching `"'

I reinstalled and provided a password that did not include a double quote
and was able to complete the installation successfully.