SDL: Add back in buffer free removed during testing

From 2432b6686e4f188a825ddef74dab326a0f9b0e98 Mon Sep 17 00:00:00 2001
From: Isaac Aronson <[EMAIL REDACTED]>
Date: Fri, 8 Sep 2023 07:15:18 -0500
Subject: [PATCH] Add back in buffer free removed during testing

---
 src/video/SDL_blit_A_sse4_1.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/video/SDL_blit_A_sse4_1.c b/src/video/SDL_blit_A_sse4_1.c
index 7dfd669624847..5348879277630 100644
--- a/src/video/SDL_blit_A_sse4_1.c
+++ b/src/video/SDL_blit_A_sse4_1.c
@@ -169,6 +169,7 @@ void SDL_TARGETING("sse4.1") BlitNtoNPixelAlpha_SSE4_1(SDL_BlitInfo* info) {
         src += srcskip;
         dst += dstskip;
     }
+    SDL_free(buffer);
 }
 
 #endif