Fixed Debian bug report Bug#29913

svn path=/trunk/; revision=2210

diff --git a/interface.c b/interface.c
index 392fa8d253f8f45c3ed99aa9eb379928b55b0321..8b7b00857f28bf12973c2cff7b0daa5e878724e4 100644 (file)
--- a/interface.c
+++ b/interface.c
@@ -211,7 +211,7 @@ void interface_note_activity(struct hostdata *hp)
                   count has now changed and they need to be re-updated)
                */
                for (ctl = querylist; ctl; ctl = ctl->next) {
-                       if (!strcmp(hp->monitor, ctl->server.monitor))
+                       if (ctl->server.monitor && !strcmp(hp->monitor, ctl->server.monitor))
                                ctl->server.monitor_io =
                                        ifinfo.rx_packets + ifinfo.tx_packets;
                        /* do NOT update host entries following this one */