SDL: Fixed memory leak when removing existing displays (98fa9)

SDL Commits
1 
From 98fa97de91b79b842779de6d12428bcad9b881f8 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Thu, 8 Dec 2022 12:43:23 -0800
Subject: [PATCH] Fixed memory leak when removing existing displays

(cherry picked from commit cfc7cac3c9f33fada3d3da1ba974f33ddb4ddfc5)
---
 src/video/SDL_video.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/video/SDL_video.c b/src/video/SDL_video.c
index 905ab8640f15..04d78afed782 100644
--- a/src/video/SDL_video.c
+++ b/src/video/SDL_video.c
@@ -623,6 +623,7 @@ void SDL_DelVideoDisplay(int index)
     SDL_SendDisplayEvent(&_this->displays[index], SDL_DISPLAYEVENT_DISCONNECTED, 0);
 
     if (index < (_this->num_displays - 1)) {
+        SDL_free(_this->displays[index].driverdata);
         SDL_memmove(&_this->displays[index], &_this->displays[index + 1], (_this->num_displays - index - 1) * sizeof(_this->displays[index]));
     }
     --_this->num_displays;