Fix signature of min/max proto getter
The getters for min and max proto version wrongly passed NULL instead of 0 as third argument to SSL_ctrl() and SSL_CTX_ctrl(). The third argument is not used, but the error results in a compiler warning: warning: passing argument 3 of ‘SSL_CTX_ctrl’ makes integer from pointer without a cast [-Wint-conversion] int v = SSL_CTX_get_max_proto_version(self->ctx); See https://github.com/openssl/openssl/pull/4364 Signed-off-by:Christian Heimes <christian@python.org> Reviewed-by:
Rich Salz <rsalz@openssl.org> Reviewed-by:
Kurt Roeckx <kurt@roeckx.be> Reviewed-by:
Ben Kaduk <kaduk@mit.edu> (Merged from https://github.com/openssl/openssl/pull/5128) (cherry picked from commit 1f82eba7)
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