This fixes the build on FreeBSD, where DSO_METHOD_openssl is undefined
since dso_openssl.c only compiles the function if DSO_NONE is defined.

Sorry, I just realized this isn't applicable to the OpenSSL we currently pull in: I was testing against OpenSSL_1_1_1-stable where they changed the configuration in https://github.com/openssl/openssl/commit/5fba3afad01707f4a8856a35500de007a8a256ec#diff-e1ea891baa345b284ad0a5a663bb9b20 :

"Rework DSO API conditions and configuration option

'no-dso' is meaningless, as it doesn't get any macro defined.
Therefore, we remove all checks of OPENSSL_NO_DSO.  However, there may
be some odd platforms with no DSO scheme.  For those, we generate the
internal macro DSO_NONE aand use it."



So please ignore this.


-- 
Rebecca Cran