SDL: mouse: Free the default cursor when destroyed

SDL Commits
1 
From e58c2731fe83f539453a3dba5606e444020f42fe Mon Sep 17 00:00:00 2001
From: Frank Praznik <[EMAIL REDACTED]>
Date: Wed, 16 Aug 2023 12:32:58 -0400
Subject: [PATCH] mouse: Free the default cursor when destroyed

The default cursor was being leaked on destruction as it is not in the cursor list, and subsequently SDL_DestroyCursor() wouldn't call the free function for it.
---
 src/events/SDL_mouse.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/events/SDL_mouse.c b/src/events/SDL_mouse.c
index fd8b62cee569..79d0b6518aef 100644
--- a/src/events/SDL_mouse.c
+++ b/src/events/SDL_mouse.c
@@ -239,7 +239,11 @@ void SDL_SetDefaultCursor(SDL_Cursor *cursor)
         }
         mouse->def_cursor = NULL;
 
-        SDL_DestroyCursor(default_cursor);
+        if (mouse->FreeCursor && default_cursor->driverdata) {
+            mouse->FreeCursor(default_cursor);
+        } else {
+            SDL_free(default_cursor);
+        }
     }
 
     mouse->def_cursor = cursor;