Howdy, Arch community!

Today Ardour warned me that I had a ulimit enforced for locked memory,
and indeed I was surprised to find that `ulimit -l` reported 8192 for
my user (which I configured to `unlimited` a long time ago). After a
bit of investigation, it turned out that this is a bug introduced by
PAM 1.6, which fails to read my limits.conf file due to the extra
whitespace separating entries:

```
@audio           -       memlock         unlimited
```

This makes pam_limits.so fail with the following:
```
pam_limits(login:session): wrong limit value '        unlimited' for
limit type '-'
```

Looks like this issue was introduced with [1], and indeed I can
confirm that it's fixed by [2] which references the first commit.

Is there any chance we can get a 1.6.0-5 update with this patch in?
This version is already in core, and it's a very subtle issue which is
likely to be unnoticed by many but come with a lot of (possibly
security-relevant) side effects.

[1] https://github.com/linux-pam/linux-pam/commit/eec4358a49dc0d6d699532965f453f0da240227e
[2] https://github.com/linux-pam/linux-pam/commit/9228077d762fc94ebc8d9fb4edfe9b481d96318d

Thanks!

--
Simone