maintain the listener_peak stat across relay restarts

svn path=/icecast/trunk/icecast/; revision=10033

src/source.c

@@ -589,8 +589,6 @@ static void source_init (source_t *source)
         free(listenurl);
     }
 
-    stats_event_args (source->mount, "listener_peak", "0");
-
     if (source->dumpfilename != NULL)
     {
         source->dumpfile = fopen (source->dumpfilename, "ab");
@@ -609,7 +607,7 @@ static void source_init (source_t *source)
     stats_event_inc (NULL, "source_total_connections");
     stats_event (source->mount, "slow_listeners", "0");
     stats_event_args (source->mount, "listeners", "%lu", source->listeners);
-    stats_event (source->mount, "listener_peak", "0");
+    stats_event_args (source->mount, "listener_peak", "%lu", source->peak_listeners);
     stats_event_time (source->mount, "stream_start");
 
     DEBUG0("Source creation complete");