cache fix

--HG--
branch : HEAD

diff --git a/src/lib-storage/index/index-mail-headers.c b/src/lib-storage/index/index-mail-headers.c
index c89242b0769eeb4fcd2cef81b7fa2cc25d46d639..423966e7fee8f0353d5ae80354e61d66f81f80a7 100644 (file)
--- a/src/lib-storage/index/index-mail-headers.c
+++ b/src/lib-storage/index/index-mail-headers.c
@@ -781,7 +781,7 @@ void index_mail_headers_close(struct index_mail *mail)
        len = str_len(mail->data.header_data) -
                data->header_data_uncached_offset;
 
-       if (len != 0) {
+       if (idx >= data->header_data_cached) {
                mail_cache_add(mail->trans->cache_trans, data->seq,
                               mail_cache_header_fields[idx], str, len+1);
        }