From d9573bad9adba41607514c803e2b1fce3c8d79ec Mon Sep 17 00:00:00 2001
From: Martin Ling <martin-git@earth.li>
Date: Mon, 4 Nov 2013 02:16:21 +0000
Subject: [PATCH] Fix enumeration on Windows.

---
 serialport.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/serialport.c b/serialport.c
index 7022a9d..5b5739d 100644
--- a/serialport.c
+++ b/serialport.c
@@ -144,7 +144,7 @@ int sp_list_ports(struct sp_port ***list_ptr)
 		goto out_free_value;
 	}
 	while (
-		value_len = max_value_len,
+		value_len = max_value_len + 1,
 		data_size = max_data_size,
 		RegEnumValue(key, index, value, &value_len,
 			NULL, &type, (LPBYTE)data, &data_size) == ERROR_SUCCESS)