SDL: mouse: Ensure that the dummy default cursor is removed from the cursor list

SDL Commits
1 
From d60ebb06d1c6a5e97901acbea1ce1ae30cd4a375 Mon Sep 17 00:00:00 2001
From: Frank Praznik <[EMAIL REDACTED]>
Date: Wed, 16 Aug 2023 13:46:14 -0400
Subject: [PATCH] mouse: Ensure that the dummy default cursor is removed from
 the cursor list

In the case where a dummy cursor is created as the default cursor, make sure it is removed from the cursor list when freeing the default cursor.
---
 src/events/SDL_mouse.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/events/SDL_mouse.c b/src/events/SDL_mouse.c
index 79d0b6518aef..54fd53d641f8 100644
--- a/src/events/SDL_mouse.c
+++ b/src/events/SDL_mouse.c
@@ -233,12 +233,26 @@ void SDL_SetDefaultCursor(SDL_Cursor *cursor)
 
     if (mouse->def_cursor) {
         SDL_Cursor *default_cursor = mouse->def_cursor;
+        SDL_Cursor *prev, *curr;
 
         if (mouse->cur_cursor == mouse->def_cursor) {
             mouse->cur_cursor = NULL;
         }
         mouse->def_cursor = NULL;
 
+        for (prev = NULL, curr = mouse->cursors; curr;
+             prev = curr, curr = curr->next) {
+            if (curr == default_cursor) {
+                if (prev) {
+                    prev->next = curr->next;
+                } else {
+                    mouse->cursors = curr->next;
+                }
+
+                break;
+            }
+        }
+
         if (mouse->FreeCursor && default_cursor->driverdata) {
             mouse->FreeCursor(default_cursor);
         } else {