OpenSSL system call error is logged as ERROR when client disconnects abruptly

When a client using SSL disconnects abruptly MaxScale reports an error:

error : (N) Client connection (client: X.X.X.X) OpenSSL system call error.

This does not happen with MaxScale 6

Two things:

1) It is probably better logged as Warning

2) The message "OpenSSL system call error" is probably not very clear, it looks like it's a SSL problem which might be at some point but that's not the key information, what happened is not that a healthy client got a SSL problem but that a client disconnected abruptly