SDL: SDL_test: clear text cache on exit event

SDL Commits
1 
From 12c0be028e08a3056d9e0354b08c01592b3b95b7 Mon Sep 17 00:00:00 2001
From: Anonymous Maarten <[EMAIL REDACTED]>
Date: Sat, 2 Sep 2023 22:05:57 +0200
Subject: [PATCH] SDL_test: clear text cache on exit event

---
 src/test/SDL_test_common.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/test/SDL_test_common.c b/src/test/SDL_test_common.c
index 25279bcb1885..57b65ea6bd07 100644
--- a/src/test/SDL_test_common.c
+++ b/src/test/SDL_test_common.c
@@ -2046,6 +2046,8 @@ void SDLTest_CommonEvent(SDLTest_CommonState *state, SDL_Event *event, int *done
     {
         SDL_Window *window = SDL_GetWindowFromID(event->window.windowID);
         if (window) {
+            /* Clear cache to avoid stale textures */
+            SDLTest_CleanupTextDrawing();
             for (i = 0; i < state->num_windows; ++i) {
                 if (window == state->windows[i]) {
                     if (state->targets[i]) {