SDL: snake: check allocated memory before use

SDL Commits
1 
From 590e1196d098c826cd566f9f01f09b55a5115487 Mon Sep 17 00:00:00 2001
From: Anonymous Maarten <[EMAIL REDACTED]>
Date: Thu, 24 Oct 2024 23:53:44 +0200
Subject: [PATCH] snake: check allocated memory before use

---
 examples/game/01-snake/snake.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/examples/game/01-snake/snake.c b/examples/game/01-snake/snake.c
index 95aeeffca6263..6df07a1f51432 100644
--- a/examples/game/01-snake/snake.c
+++ b/examples/game/01-snake/snake.c
@@ -310,6 +310,9 @@ SDL_AppResult SDL_AppInit(void **appstate, int argc, char *argv[])
     }
 
     AppState *as = SDL_calloc(1, sizeof(AppState));
+    if (!as) {
+        return SDL_APP_FAILURE;
+    }
 
     *appstate = as;