fix double-line with "network watchdog on YSF"

func.php

@@ -475,6 +475,9 @@ function getLastHeardYSF($logpath = MMDVMHOST_LOGPATH, $prefix = MMDVMHOST_PREFI
         continue;
       }
     } elseif( strpos( $line, "network watchdog" )) {
+      if( strpos( $oldline, "network watchdog" )) {
+        break;
+      }
       $time = date( "Y-m-d H:i:s", strtotime( substr( $oldline, 3, 23 )." UTC" ));
       $callsign = trim( substr( $oldline, 59, strpos( $oldline, "to" ) - 59 ));
       if( strpos( $oldline, "DG-ID" )) {