Document SSL_CTX_get_ssl_method

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/18037)
diff --git a/doc/man3/SSL_CTX_set_ssl_version.pod b/doc/man3/SSL_CTX_set_ssl_version.pod
index ba2b816..d1885d0 100644
--- a/doc/man3/SSL_CTX_set_ssl_version.pod
+++ b/doc/man3/SSL_CTX_set_ssl_version.pod
@@ -2,7 +2,7 @@
 
 =head1 NAME
 
-SSL_CTX_set_ssl_version, SSL_set_ssl_method, SSL_get_ssl_method
+SSL_CTX_set_ssl_version, SSL_CTX_get_ssl_method, SSL_set_ssl_method, SSL_get_ssl_method
 - choose a new TLS/SSL method
 
 =head1 SYNOPSIS
@@ -10,6 +10,8 @@
  #include <openssl/ssl.h>
 
  int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *method);
+ const SSL_METHOD *SSL_CTX_get_ssl_method(const SSL_CTX *ctx);
+
  int SSL_set_ssl_method(SSL *s, const SSL_METHOD *method);
  const SSL_METHOD *SSL_get_ssl_method(const SSL *ssl);
 
@@ -22,10 +24,13 @@
 SSL_CTX with L<SSL_new(3)> are not affected, except when L<SSL_clear(3)> is
 being called, as described below.
 
+SSL_CTX_get_ssl_method() returns the SSL_METHOD which was used to construct the
+SSL_CTX.
+
 SSL_set_ssl_method() sets a new TLS/SSL B<method> for a particular B<ssl>
 object. It may be reset, when SSL_clear() is called.
 
-SSL_get_ssl_method() returns a function pointer to the TLS/SSL method
+SSL_get_ssl_method() returns a pointer to the TLS/SSL method
 set in B<ssl>.
 
 =head1 NOTES
@@ -59,6 +64,9 @@
 
 =back
 
+SSL_CTX_get_ssl_method() and SSL_get_ssl_method() always return non-NULL
+pointers.
+
 =head1 SEE ALSO
 
 L<SSL_CTX_new(3)>, L<SSL_new(3)>,
diff --git a/util/missingssl.txt b/util/missingssl.txt
index 6adf6c5..8a7e268 100644
--- a/util/missingssl.txt
+++ b/util/missingssl.txt
@@ -9,7 +9,6 @@
 SSL_CTX_get0_certificate(3)
 SSL_CTX_get0_ctlog_store(3)
 SSL_CTX_get0_privatekey(3)
-SSL_CTX_get_ssl_method(3)
 SSL_CTX_set0_ctlog_store(3)
 SSL_CTX_set_client_cert_engine(3)
 SSL_CTX_set_not_resumable_session_callback(3)