From 59611b8b378238e5a589a87061d06fe4f337d1a0 Mon Sep 17 00:00:00 2001
From: Mounir IDRASSI <mounir.idrassi@idrix.fr>
Date: Thu, 26 Nov 2015 00:34:30 +0100
Subject: Windows: solve crash caused by system function FormatMessage failure
 on rare cases.

---
 src/Common/Dlgcode.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/Common/Dlgcode.h')

diff --git a/src/Common/Dlgcode.h b/src/Common/Dlgcode.h
index 2b6aee18..af983a63 100644
--- a/src/Common/Dlgcode.h
+++ b/src/Common/Dlgcode.h
@@ -562,7 +562,7 @@ std::string IntToString (int val);
 std::wstring IntToWideString (int val);
 inline std::wstring AppendSrcPos (const wchar_t* msg, const char* srcPos)
 {
-	return std::wstring (msg) + L"\n\nSource: " + SingleStringToWide (srcPos);
+	return std::wstring (msg? msg : L"") + L"\n\nSource: " + SingleStringToWide (srcPos);
 }
 
 // Display a wait dialog while calling the provided callback with the given parameter
-- 
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