nettle: revert workaround for base64_decode_update return values

This reverts commit d6014115969655005968491be1da8892ddedc134, as it
turned out that the change of error return value was only available in
an unreleased version of Nettle.

Signed-off-by: Daiki Ueno <ueno@gnu.org>

diff --git a/lib/x509_b64.c b/lib/x509_b64.c
index 3fb2c94dfb6d437fe800909d50776f997c7d6299..0ffbfa91bf7c0b1d36074d2ba480054a48cf4c9b 100644 (file)
--- a/lib/x509_b64.c
+++ b/lib/x509_b64.c
@@ -285,10 +285,7 @@ int _gnutls_base64_decode(const uint8_t *data, size_t data_size,
 
        ret = base64_decode_update(&ctx, &size, result->data, pdata.size,
                                   (void *)pdata.data);
-       /* Nettle 4 returns -1 on error, while Nettle 3 returns 0;
-        * catch both
-        */
-       if (ret <= 0 || size == 0) {
+       if (ret == 0 || size == 0) {
                gnutls_assert();
                ret = GNUTLS_E_BASE64_DECODING_ERROR;
                goto fail;