BUG #8517: Problem due to libeay32.dll about ordinal

The following bug has been logged on the website:

Bug reference: 8517
Logged by: Sémy
Email address: s(dot)mechaab(at)gmail(dot)com
PostgreSQL version: 8.4.0
Operating system: Windows 7 - 32bits
Description:

Hello,

I'm trying since yesterday to install a software which needs to install
postgreSQL 8.4 aswell. When the installation is finished, a message appears
a few times which says
"The 3873 ordinal can't be find in the LIBEAY32.dll dynamic library" (in
french)
So i suppose i've some corrupted files, but could you maybe light me on
about this problem ?

Thank you,
Regards,
Sémy