SDL: Check return value of SDL_malloc() (a688e)

SDL Commits
1 
From a688ecd6faa771f4660608dfbc636bb5fd167156 Mon Sep 17 00:00:00 2001
From: Mingjie Shen <[EMAIL REDACTED]>
Date: Sun, 23 Apr 2023 00:26:03 -0400
Subject: [PATCH] Check return value of SDL_malloc()

(cherry picked from commit a4604cb0d616db97921a2674a63b45f3fdfb81bc)
---
 src/video/SDL_shape.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/video/SDL_shape.c b/src/video/SDL_shape.c
index 018588d5a992..509f029a5851 100644
--- a/src/video/SDL_shape.c
+++ b/src/video/SDL_shape.c
@@ -138,6 +138,11 @@ static SDL_ShapeTree *RecursivelyCalculateShapeTree(SDL_WindowShapeMode mode, SD
     SDL_ShapeTree *result = (SDL_ShapeTree *)SDL_malloc(sizeof(SDL_ShapeTree));
     SDL_Rect next = { 0, 0, 0, 0 };
 
+    if (result == NULL) {
+        SDL_OutOfMemory();
+        return NULL;
+    }
+
     for (y = dimensions.y; y < dimensions.y + dimensions.h; y++) {
         for (x = dimensions.x; x < dimensions.x + dimensions.w; x++) {
             pixel_value = 0;