If the call the ERR_set_error_data() in ERR_add_error_vdata() fails then
a mem leak can occur. This commit checks that we successfully added the
error data, and if not frees the buffer.
Fixes #8085
Reviewed-by: Paul Yang <yang.yang@baishancloud.com>
(Merged from https://github.com/openssl/openssl/pull/8105)