IMAP: When QRESYNC is enabled, don't crash when a new mail is received while IDLEing.

--HG--
branch : HEAD

diff --git a/src/imap/imap-sync.c b/src/imap/imap-sync.c
index ce02e8a533bd0e82630f6615b8ed201bb548ff14..bc9d4215ba007e0842dd5bea2a21cbf5fa91de56 100644 (file)
--- a/src/imap/imap-sync.c
+++ b/src/imap/imap-sync.c
@@ -180,7 +180,7 @@ imap_sync_send_highestmodseq(struct imap_sync_context *ctx,
        } else if (!status->sync_delayed_expunges &&
                   status->highest_modseq > client->sync_last_full_modseq &&
                   status->highest_modseq > client->highest_fetch_modseq) {
-               /* we've probably send some VANISHED or EXISTS replies which
+               /* we've probably sent some VANISHED or EXISTS replies which
                   increased the highest-modseq. notify the client about
                   this. */
                send_modseq = status->highest_modseq;
@@ -188,7 +188,8 @@ imap_sync_send_highestmodseq(struct imap_sync_context *ctx,
 
        if (send_modseq == 0) {
                /* no sending */
-       } else if (strncmp(sync_cmd->sync->tagline, "OK ", 3) == 0 &&
+       } else if (sync_cmd->sync != NULL && /* IDLE doesn't have ->sync */
+                  strncmp(sync_cmd->sync->tagline, "OK ", 3) == 0 &&
                   sync_cmd->sync->tagline[3] != '[') {
                /* modify the tagged reply directly */
                sync_cmd->sync->tagline = p_strdup_printf(sync_cmd->pool,