getpwnam(3) recommends to use $HOME instead of getpwuid()->pw_dir,
as it allows users to point programs to a different path.
Using getpwuid() also breaks namespaces-related use cases,
like `unshare -r`.
Patch was submitted by Dmitry Bogatov on the Debian bug tracker:
https://bugs.debian.org/825397
Signed-off-by: Christoph Lohmann <20h@r-36.net>
