altoslib: When GPS disappears, set range and elevation to MISSING

Use MISSING instead of bogus values so that displayers can tell what
to do.

Signed-off-by: Keith Packard <keithp@keithp.com>

diff --git a/altoslib/AltosState.java b/altoslib/AltosState.java
index d391dcfb2f2773c90ec4cb711c54aa7d97ea076d..b05cd3586061ad111d99084733f84865c360339e 100644 (file)
--- a/altoslib/AltosState.java
+++ b/altoslib/AltosState.java
@@ -910,8 +910,8 @@ public class AltosState implements Cloneable {
        }
 
        void update_gps() {
-               elevation = 0;
-               range = -1;
+               elevation = AltosLib.MISSING;
+               range = AltosLib.MISSING;
 
                if (gps == null)
                        return;