From 99bc3b4eda105d71fc0767a514b33eae7efecbeb Mon Sep 17 00:00:00 2001
From: robertl <robertl>
Date: Sat, 16 Nov 2002 03:06:08 +0000
Subject: [PATCH] Honor unknown alt (make zero) on upload.

---
 magproto.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/magproto.c b/magproto.c
index c8fb6f964..9011e017d 100644
--- a/magproto.c
+++ b/magproto.c
@@ -981,7 +981,8 @@ mag_waypt_pr(const waypoint *waypointp)
 	sprintf(obuf, "PMGNWPL,%4.3f,%c,%09.3f,%c,%07.lf,M,%-.8s,%-.30s,%s",
 		lat, ilon < 0 ? 'N' : 'S',
 		lon, ilat < 0 ? 'E' : 'W',
-		waypointp->position.altitude.altitude_meters,
+		waypointp->position.altitude.altitude_meters == unknown_alt ?
+			0 : waypointp->position.altitude.altitude_meters,
 		owpt,
 		odesc,
 		icon_token);
-- 
2.30.2