s3:nmbd: Fix possible integer overflow

This fixes compilation with -Wstrict-overflow=2

Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Andrew Bartlett <abartlet@samba.org>

diff --git a/source3/nmbd/nmbd_sendannounce.c b/source3/nmbd/nmbd_sendannounce.c
index 1d557c45bbdbeb5b400fa5d5db1a7a5d132db092..44d67e7ca843da6f5142883e0524b83de45e1227 100644 (file)
--- a/source3/nmbd/nmbd_sendannounce.c
+++ b/source3/nmbd/nmbd_sendannounce.c
@@ -288,8 +288,10 @@ void announce_my_server_names(time_t t)
                        }
 
                        /* Announce every minute at first then progress to every 12 mins */
-                       if ((t - work->lastannounce_time) < work->announce_interval)
+                       if (t > work->lastannounce_time &&
+                           (t - work->lastannounce_time) < work->announce_interval) {
                                continue;
+                       }
 
                        if (work->announce_interval < (CHECK_TIME_MAX_HOST_ANNCE * 60))
                                work->announce_interval += 60;