An earlier commit was causing docker windows CLI build to not to pick up
the shorthand form for home directory (`%USERPROFILE%`) shown in when
`docker --help` is executed.
Fixing that bug and making the if statement concise and clear.
Signed-off-by: Ahmet Alp Balkan <ahmetalpbalkan@gmail.com>
Upstream-commit: 802c90500073ad79e5a6520402ef2a7268c824b7
Component: engine