X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=altosui%2FAltosConfig.java;h=4b0edec0fbf5492aa48501c5e9ab2540f121d65c;hb=c8866fbae2b00b1d7a7ddf89a3f971a75d3dcd60;hp=44c6239af278821f0d229bd29e5d4eb2cdddb17b;hpb=055f3232decc07e064d596469b81cf9869411c2d;p=fw%2Faltos

diff --git a/altosui/AltosConfig.java b/altosui/AltosConfig.java
index 44c6239a..4b0edec0 100644
--- a/altosui/AltosConfig.java
+++ b/altosui/AltosConfig.java
@@ -393,8 +393,10 @@ public class AltosConfig implements ActionListener {
 	}
 
 	void abort() {
-		serial_line.close();
-		serial_line = null;
+		if (serial_line != null) {
+			serial_line.close();
+			serial_line = null;
+		}
 		JOptionPane.showMessageDialog(owner,
 					      String.format("Connection to \"%s\" failed",
 							    device.toShortString()),