From: Keith Packard <keithp@keithp.com>
Date: Thu, 29 Jul 2010 17:24:09 +0000 (-0700)
Subject: altosui: check for closed serial device before reading
X-Git-Tag: debian/0.6+290+g7877496~12
X-Git-Url: https://git.gag.com/?p=fw%2Faltos;a=commitdiff_plain;h=e33dbbba94ce42295e9fed9f4ba7e46f9eff1517

altosui: check for closed serial device before reading

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

diff --git a/ao-tools/altosui/AltosSerial.java b/ao-tools/altosui/AltosSerial.java
index a5566ab8..96e8b61f 100644
--- a/ao-tools/altosui/AltosSerial.java
+++ b/ao-tools/altosui/AltosSerial.java
@@ -51,6 +51,8 @@ public class AltosSerial implements Runnable {
 
 		try {
 			for (;;) {
+				if (altos == null)
+					break;
 				c = libaltos.altos_getchar(altos, 0);
 				if (Thread.interrupted())
 					break;