SDL: GLES2/Big-endian: don´t swap datas for yuv textures (Thanks 0x1F9F1 !)

SDL Commits
1 
From 44c84c0d8e1701b9a0d0e3688f31b3a79163a81a Mon Sep 17 00:00:00 2001
From: Sylvain <[EMAIL REDACTED]>
Date: Fri, 17 Dec 2021 17:44:34 +0100
Subject: [PATCH] =?UTF-8?q?GLES2/Big-endian:=20don=C2=B4t=20swap=20datas?=
 =?UTF-8?q?=20for=20yuv=20textures=20(Thanks=200x1F9F1=20!)?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 src/render/opengles2/SDL_render_gles2.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/render/opengles2/SDL_render_gles2.c b/src/render/opengles2/SDL_render_gles2.c
index ddd336e3d93..175ef5e26a9 100644
--- a/src/render/opengles2/SDL_render_gles2.c
+++ b/src/render/opengles2/SDL_render_gles2.c
@@ -1516,7 +1516,7 @@ GLES2_TexSubImage2D(GLES2_RenderData *data, GLenum target, GLint xoffset, GLint
     }
 
 #if SDL_BYTEORDER == SDL_BIG_ENDIAN
-    {
+    if (format == GL_RGBA) {
         int i;
         Uint32 *src32 = (Uint32 *)src;
         blob2 = (Uint32 *)SDL_malloc(src_pitch * height);