obtain state information for SSL objects created from B<ctx> during connection
setup and use. The setting for B<ctx> is overridden from the setting for
a specific SSL object, if specified.
-When B<callback> is NULL, not callback function is used.
+When B<callback> is NULL, no callback function is used.
SSL_set_info_callback() sets the B<callback> function, that can be used to
obtain state information for B<ssl> during connection setup and use.