lib-imap-storage: When returning an error istream, give it a useful name.

diff --git a/src/lib-imap-storage/imap-msgpart.c b/src/lib-imap-storage/imap-msgpart.c
index 1fe4dabcd06f95f234ce7678cce0bf05f6372d6e..c697f32ed5c64fde8c105e64d0250b1242cc03ee 100644 (file)
--- a/src/lib-imap-storage/imap-msgpart.c
+++ b/src/lib-imap-storage/imap-msgpart.c
@@ -412,7 +412,7 @@ imap_msgpart_crlf_seek(struct mail *mail, struct istream *input,
                       const struct imap_msgpart *msgpart)
 {
        struct mail_msgpart_partial_cache *cache = &mail->box->partial_cache;
-       struct istream *crlf_input;
+       struct istream *crlf_input, *errinput;
        uoff_t physical_start = input->v_offset;
        uoff_t virtual_skip = msgpart->partial_offset;
        bool cr_skipped;
@@ -432,8 +432,11 @@ imap_msgpart_crlf_seek(struct mail *mail, struct istream *input,
                   message parts. */
                skip_using_parts(mail, input, physical_start, &virtual_skip);
        }
-       if (message_skip_virtual(input, virtual_skip, &cr_skipped) < 0)
-               return i_stream_create_error(errno);
+       if (message_skip_virtual(input, virtual_skip, &cr_skipped) < 0) {
+               errinput = i_stream_create_error(errno);
+               i_stream_set_name(errinput, i_stream_get_name(input));
+               return errinput;
+       }
 
        if ((msgpart->partial_offset != 0 ||
             msgpart->partial_size != (uoff_t)-1) && !input->eof) {