From d0d087511ff321868cccc79797d52763c4dc2d2b Mon Sep 17 00:00:00 2001
From: Rafael Kitover <rkitover@gmail.com>
Date: Tue, 10 Dec 2019 23:41:40 +0000
Subject: [PATCH] MSVC: Fix SDL binary assertion failure on start.

sdlReadDesktopVideoMode() was apparently being called when the window
pointer is NULL.

Wrap the code in an `if (window) { ... }`.

SDL binary now launches correctly.

Signed-off-by: Rafael Kitover <rkitover@gmail.com>
---
 src/sdl/SDL.cpp | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/sdl/SDL.cpp b/src/sdl/SDL.cpp
index 469afe2d..2ec53664 100644
--- a/src/sdl/SDL.cpp
+++ b/src/sdl/SDL.cpp
@@ -763,10 +763,12 @@ void sdlReadBattery()
 
 void sdlReadDesktopVideoMode()
 {
-    SDL_DisplayMode dm;
-    SDL_GetDesktopDisplayMode(SDL_GetWindowDisplayIndex(window), &dm);
-    desktopWidth = dm.w;
-    desktopHeight = dm.h;
+    if (window) {
+        SDL_DisplayMode dm;
+        SDL_GetDesktopDisplayMode(SDL_GetWindowDisplayIndex(window), &dm);
+        desktopWidth = dm.w;
+        desktopHeight = dm.h;
+    }
 }
 
 static void sdlResizeVideo()