From 1cb6ab9db189e36fbe006a9969c9e784dcb90906 Mon Sep 17 00:00:00 2001
From: terminx <terminx@1a8010ca-5511-0410-912e-c29ae57300e0>
Date: Thu, 12 Apr 2018 21:04:07 +0000
Subject: [PATCH] Prevent divide by 0 when
 SDL_GetCurrentDisplayMode()/SDL_GetClosestDisplayMode() say the refresh rate
 is 0

git-svn-id: https://svn.eduke32.com/eduke32@6833 1a8010ca-5511-0410-912e-c29ae57300e0
---
 source/build/src/sdlayer.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/source/build/src/sdlayer.cpp b/source/build/src/sdlayer.cpp
index 4296be583..3eb023bc3 100644
--- a/source/build/src/sdlayer.cpp
+++ b/source/build/src/sdlayer.cpp
@@ -1519,6 +1519,9 @@ void setrefreshrate(void)
         SDL_SetWindowDisplayMode(sdl_window, &newmode);
     }
 
+    if (!newmode.refresh_rate)
+        newmode.refresh_rate = 60;
+
     currentVBlankInterval = 1000/newmode.refresh_rate;
 }