From ce4b14c61125c43608e2a9c9e6edcfa13aab071e Mon Sep 17 00:00:00 2001
From: Freddie Akeroyd <freddie.akeroyd@stfc.ac.uk>
Date: Tue, 23 Feb 2021 01:09:50 +0000
Subject: [PATCH] Check for NULL as well as INVALID_HANDLE_VALUE

---
 src/StreamError.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/StreamError.cc b/src/StreamError.cc
index a52d161..088a81d 100644
--- a/src/StreamError.cc
+++ b/src/StreamError.cc
@@ -56,7 +56,8 @@ static bool win_console_init() {
     for(int i=0; i < sizeof(hCons) / sizeof(HANDLE); ++i)
     {
         DWORD dwMode = 0;
-        if (hCons[i] == INVALID_HANDLE_VALUE ||
+        if (hCons[i] == NULL ||
+            hCons[i] == INVALID_HANDLE_VALUE ||
             !GetConsoleMode(hCons[i], &dwMode))
         {
             return false;