jit-trust: SAN_RFC822_NAME needs other_name union member

->san is a union, in this case we set the type to indicate we use
SAN_OTHER_NAME member, but set the unstructured_name union member, that is
smaller.

This doesn't cause any problem, since the union has space for it.  But
Coverity noticed, it is wrong, so fix it.

lib/tls/mbedtls/mbedtls-extensions.c

@@ -258,7 +258,7 @@ lws_mbedtls_x509_parse_general_name(const mbedtls_x509_buf *name_buf,
 
 		memset(name, 0, sizeof(*name));
 		name->type = LWS_MBEDTLS_X509_SAN_OTHER_NAME;
-		memcpy(&name->san.unstructured_name,
+		memcpy(&name->san.other_name,
 		       &rfc822Name, sizeof(rfc822Name));
 		return 0;