SDL: Only free debug_char_texture_atlas if it has been allocated

SDL Commits
1 
From c5e1ae4580b1d2af5fcf6e70e72296a85d208212 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Thu, 17 Oct 2024 15:42:14 -0700
Subject: [PATCH] Only free debug_char_texture_atlas if it has been allocated

Fixes https://github.com/libsdl-org/SDL/issues/11254
---
 src/render/SDL_render.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/render/SDL_render.c b/src/render/SDL_render.c
index b60bc861ccad8..7f2a354868818 100644
--- a/src/render/SDL_render.c
+++ b/src/render/SDL_render.c
@@ -5098,8 +5098,10 @@ void SDL_DestroyRendererWithoutFreeing(SDL_Renderer *renderer)
 
     SDL_DiscardAllCommands(renderer);
 
-    SDL_DestroyTexture(renderer->debug_char_texture_atlas);
-    renderer->debug_char_texture_atlas = NULL;
+    if (renderer->debug_char_texture_atlas) {
+        SDL_DestroyTexture(renderer->debug_char_texture_atlas);
+        renderer->debug_char_texture_atlas = NULL;
+    }
 
     // Free existing textures for this renderer
     while (renderer->textures) {