From 9f6eea0188e1ffe4ba7190c8e7bf3c08667f20d5 Mon Sep 17 00:00:00 2001
From: martin-zaber <martin@zaber.com>
Date: Thu, 21 Mar 2019 09:51:03 -0700
Subject: [PATCH] Fixing getPortList on windows without any ports

---
 serial_windows.go | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/serial_windows.go b/serial_windows.go
index 0ae145b..88c14c2 100644
--- a/serial_windows.go
+++ b/serial_windows.go
@@ -30,7 +30,10 @@ func nativeGetPortsList() ([]string, error) {
 	}
 
 	var h syscall.Handle
-	if syscall.RegOpenKeyEx(syscall.HKEY_LOCAL_MACHINE, subKey, 0, syscall.KEY_READ, &h) != nil {
+	if err := syscall.RegOpenKeyEx(syscall.HKEY_LOCAL_MACHINE, subKey, 0, syscall.KEY_READ, &h); err != nil {
+		if errno, isErrno := err.(syscall.Errno); isErrno && errno == syscall.ERROR_FILE_NOT_FOUND {
+			return []string{}, nil
+		}
 		return nil, &PortError{code: ErrorEnumeratingPorts}
 	}
 	defer syscall.RegCloseKey(h)