monitor: fix output error when exiting

When CTRL+C is pressed, terminal should be closed without
spilling out any error. This fixes it.

Signed-off-by: Sylvio Alves <[email protected]>

Author: sylvioalves

tools/idf_monitor/idf_monitor_base/console_reader.py

@@ -94,4 +94,8 @@ def _cancel(self):
             # Note: This would throw exception in testing mode when the stdin is connected to PTY.
             import fcntl
             import termios
-            fcntl.ioctl(self.console.fd, termios.TIOCSTI, b'\0')
+            try:
+                fcntl.ioctl(self.console.fd, termios.TIOCSTI, b'\0')
+            except OSError:
+                # ignore I/O errors when injecting the “unblock” byte
+                pass