algorithm definition is returned. Ownership of the returned string is retained
by the I<encoder> object and should not be freed by the caller.
-OSSL_ENCODER_get0_description() returns a pointer to a decription, or NULL if
+OSSL_ENCODER_get0_description() returns a pointer to a description, or NULL if
there isn't one.
OSSL_ENCODER_names_do_all() returns 1 if the callback was called for all