BUG #15564: Setup sets wrong data type for value in Windows Registry

The following bug has been logged on the website:

Bug reference:      15564
Logged by:          Panagiotis Drivilas
Email address:      pdrivilas@gmail.com
PostgreSQL version: 11.1
Operating system:   Windows 10 Pro x64
Description:

Greetings,

I have noticed that the installation sets the following registry key:
HKEY_CURRENT_USER\Software\PostgreSQL\StackBuilder\Download Path

as REG_DWORD but writes to it as string.

Regedit shows for this key: (invalid DWORD (32-bit) value)
If you double click it shows the download path as binary data.

The same problem exists in PostgreSQL 10 installation in another machine
with Windows 10 Pro x64.

Best regards