SDL: emscripten: Fix framebuffer array creation optimisation

From abc04270b778fd9abdc35d88e9874688fc9cfeb5 Mon Sep 17 00:00:00 2001
From: Charlie Birks <[EMAIL REDACTED]>
Date: Wed, 15 Apr 2020 15:22:39 +0100
Subject: [PATCH] emscripten: Fix framebuffer array creation optimisation

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

diff --git a/src/video/emscripten/SDL_emscriptenframebuffer.c b/src/video/emscripten/SDL_emscriptenframebuffer.c
index 219d48c50c..95087dab1b 100644
--- a/src/video/emscripten/SDL_emscriptenframebuffer.c
+++ b/src/video/emscripten/SDL_emscriptenframebuffer.c
@@ -109,6 +109,7 @@ int Emscripten_UpdateWindowFramebuffer(_THIS, SDL_Window * window, const SDL_Rec
             if (SDL2.data32Data !== data) {
                 SDL2.data32 = new Int32Array(data.buffer);
                 SDL2.data8 = new Uint8Array(data.buffer);
+                SDL2.data32Data = data;
             }
             var data32 = SDL2.data32;
             num = data32.length;