From e0ea4da4aed4b46e8d7cc9c06eae90c16772024b Mon Sep 17 00:00:00 2001
From: Alex Szpakowski <slime73@gmail.com>
Date: Wed, 12 Jul 2017 21:32:10 -0300
Subject: [PATCH] Fix a potential crash in macOS 10.7 and earlier.

---
 src/video/cocoa/SDL_cocoamodes.m | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/video/cocoa/SDL_cocoamodes.m b/src/video/cocoa/SDL_cocoamodes.m
index d7fb0fd16..592367aca 100644
--- a/src/video/cocoa/SDL_cocoamodes.m
+++ b/src/video/cocoa/SDL_cocoamodes.m
@@ -392,7 +392,10 @@ Cocoa_GetDisplayModes(_THIS, SDL_VideoDisplay * display)
 #endif
 
     modes = CGDisplayCopyAllDisplayModes(data->display, dict);
-    CFRelease(dict);
+
+    if (dict != NULL) {
+        CFRelease(dict);
+    }
 
     if (modes) {
         CVDisplayLinkRef link = NULL;