From 5f61fecd57870ba6ffec7f15cd6eac44fa0ae1f0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Wies=C5=82aw=20=C5=A0olt=C3=A9s?= <wieslaw.soltes@gmail.com>
Date: Tue, 19 Apr 2016 00:16:59 +0200
Subject: [PATCH] Fixed NRE in SystemDialogImpl

---
 src/Windows/Perspex.Win32/SystemDialogImpl.cs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Windows/Perspex.Win32/SystemDialogImpl.cs b/src/Windows/Perspex.Win32/SystemDialogImpl.cs
index f0271b7544..567df4ed0f 100644
--- a/src/Windows/Perspex.Win32/SystemDialogImpl.cs
+++ b/src/Windows/Perspex.Win32/SystemDialogImpl.cs
@@ -40,7 +40,7 @@ namespace Perspex.Win32
                 var filterBuffer = new char[filters.Length];
                 filters.CopyTo(0, filterBuffer, 0, filterBuffer.Length);
 
-                var defExt = (dialog as SaveFileDialog)?.DefaultExtension.ToArray();
+                var defExt = (dialog as SaveFileDialog)?.DefaultExtension?.ToArray();
                 var fileBuffer = new char[256];
                 dialog.InitialFileName?.CopyTo(0, fileBuffer, 0, dialog.InitialFileName.Length);