BUG/MEDIUM: ssl: fix tune.ssl.default-dh-param value being overwritten

Hervé Commowick reported that the logic used to avoid complaining about
ssl-default-dh-param not being set when static DH params are present
in the certificate file was clearly wrong when more than one sni_ctx
is used.
This patch stores whether static DH params are being used for each
SSL_CTX individually, and does not overwrite the value of
tune.ssl.default-dh-param.
(cherry picked from commit 4f902b88323927c9d25d391a809e3678ac31df41)
1 file changed