SDL: fix build error due to -Wshadow

From e1d79b418ce8ccb503fba0d53f4aa72a9c2ca627 Mon Sep 17 00:00:00 2001
From: Ozkan Sezer <[EMAIL REDACTED]>
Date: Sun, 5 Feb 2023 20:45:02 +0300
Subject: [PATCH] fix build error due to -Wshadow

---
 test/testautomation_render.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/test/testautomation_render.c b/test/testautomation_render.c
index 2040d9a1b1c2..3f7653f25fab 100644
--- a/test/testautomation_render.c
+++ b/test/testautomation_render.c
@@ -1164,7 +1164,7 @@ hasTexAlpha(void)
 static void
 compare(SDL_Surface *referenceSurface, int allowable_error)
 {
-   int result;
+   int ret;
    SDL_Rect rect;
    Uint8 *pixels;
    SDL_Surface *testSurface;
@@ -1188,8 +1188,8 @@ compare(SDL_Surface *referenceSurface, int allowable_error)
    SDLTest_AssertCheck(testSurface != NULL, "Verify result from SDL_CreateSurfaceFrom is not NULL");
 
    /* Compare surface. */
-   result = SDLTest_CompareSurfaces( testSurface, referenceSurface, allowable_error );
-   SDLTest_AssertCheck(result == 0, "Validate result from SDLTest_CompareSurfaces, expected: 0, got: %i", result);
+   ret = SDLTest_CompareSurfaces( testSurface, referenceSurface, allowable_error );
+   SDLTest_AssertCheck(ret == 0, "Validate result from SDLTest_CompareSurfaces, expected: 0, got: %i", ret);
 
    /* Clean up. */
    SDL_free(pixels);