altosui: Flush telemetry lines before starting to watch for scan results

This prevents pending telemetry lines from being incorrectly
attributed to the wrong channel/telemetry.

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

1 files changed, 4 insertions, 0 deletions

diff --git a/altosui/AltosTelemetryReader.java b/altosui/AltosTelemetryReader.java
index 18f17841..23524b2c 100644
--- a/altosui/AltosTelemetryReader.java
+++ b/altosui/AltosTelemetryReader.java
@@ -39,6 +39,10 @@ class AltosTelemetryReader extends AltosFlightReader {
 		return next;
 	}
 
+	void flush() {
+		telem.clear();
+	}
+
 	void close(boolean interrupted) {
 		serial.remove_monitor(telem);
 		log.close();