Fix samba_dlz when named "reloads".

[github at samba.org]

New comment by abartlet on Samba Github repository

https://github.com/samba-team/samba/pull/124#issuecomment-448914278
Comment:
@kristjanvalur can you please re-test with Samba git master.  We have made some changes there to more clearly tell us what is going on here, as we have had difficultly reproducing this issue.  The resulting log file will be helpful in us understanding the crash, if it still happens.