From 9d559fa7144c619bba9a50ff6f24d8091f105237 Mon Sep 17 00:00:00 2001
From: Maik Macho <nuda1998@gmail.com>
Date: Fri, 27 Oct 2017 00:29:34 +0200
Subject: [PATCH] Fix NRE - I assumed GetEnvironmentVariable returns "", not
 null

---
 src/Helper/XnaToFnaHelper.cs | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/Helper/XnaToFnaHelper.cs b/src/Helper/XnaToFnaHelper.cs
index 0ef8079..af3825e 100644
--- a/src/Helper/XnaToFnaHelper.cs
+++ b/src/Helper/XnaToFnaHelper.cs
@@ -73,12 +73,12 @@ public static void ApplyChanges(GraphicsDeviceManager self) {
                 self.IsFullScreen = true;
 
             int forceWidth;
-            if (int.TryParse(Environment.GetEnvironmentVariable("XNATOFNA_DISPLAY_WIDTH"), out forceWidth))
+            if (int.TryParse(Environment.GetEnvironmentVariable("XNATOFNA_DISPLAY_WIDTH") ?? "", out forceWidth))
                 self.PreferredBackBufferWidth = forceWidth;
             int forceHeight;
-            if (int.TryParse(Environment.GetEnvironmentVariable("XNATOFNA_DISPLAY_HEIGHT"), out forceHeight))
+            if (int.TryParse(Environment.GetEnvironmentVariable("XNATOFNA_DISPLAY_HEIGHT") ?? "", out forceHeight))
                 self.PreferredBackBufferHeight = forceHeight;
-            string[] forceSize = Environment.GetEnvironmentVariable("XNATOFNA_DISPLAY_SIZE").Split('x');
+            string[] forceSize = (Environment.GetEnvironmentVariable("XNATOFNA_DISPLAY_SIZE") ?? "").Split('x');
             if (forceSize.Length == 2) {
                 if (int.TryParse(forceSize[0], out forceWidth))
                     self.PreferredBackBufferWidth = forceWidth;