SSL errors, verbosity level

[shiz]

> Since you are using newer openssl, you may want to apply this patch

I agree, many thanks to Piotr Sikora and to you, Frank!

2nd patch applied as well.

My error log is a lot more readable now.  I can see those real critical
messages without being cluttered by meaningless/unfixable SSL issues.

Any chance those are merged into nginx 1.15.2?

Posted at Nginx Forum: https://forum.nginx.org/read.php?2,280446,280504#msg-280504