diff options
| -rw-r--r-- | altosui/AltosConfig.java | 6 |
1 files changed, 4 insertions, 2 deletions
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()), |