Use defined values from defs header file (unknown_speed).

diff --git a/trackfilter.c b/trackfilter.c
index f904db4960eabf0afeeaedfa9b40fc99175e8adc..f54ced1df91ce47fdb11d2bb9344f2be580cde2b 100644 (file)
--- a/trackfilter.c
+++ b/trackfilter.c
@@ -667,7 +667,7 @@ trackfilter_synth(void)
                                            labs(wpt->creation_time-oldtime);
                                }       
                                else {
-                                       wpt->speed = -999.0;
+                                       wpt->speed = unknown_speed;
                                }
                        }
                }