- node->decrypted_child = g_mime_multipart_encrypted_decrypt
-#if (GMIME_MAJOR_VERSION < 3)
- (encrypteddata, cryptoctx, &decrypt_result, &err);
-#else
- (encrypteddata, GMIME_DECRYPT_NONE, NULL, &decrypt_result, &err);
-#endif
+ if (! node->decrypted_child)
+ node->decrypted_child = _notmuch_crypto_decrypt (cryptoctx, encrypteddata, &decrypt_result, &err);