Is initalization missing for socket_name and socket_dir?

[Erik Sjölund]

In the PR
https://github.com/openssh/openssh-portable/pull/502
the variables socket_name and socket_dir are initialized here:
https://github.com/dkg/openssh-portable/blob/31873e2f6f841f20aeff5d0368cba71af4bb1352/ssh-agent.c#L2352-L2353
but the those lines didn't make it into the final version.

Could socket_name[0] be uninitialized here:
https://github.com/openssh/openssh-portable/blob/9b50cb171b5c56184ce6fa3994ce62f9882d2daf/ssh-agent.c#L2437
?

Maybe something like the attached patch is needed?
(This is untested code)