SDL: testgamecontroller.c: fixed -Wshadow warnings.

SDL Commits
#1 
From 3eaa80bb0b465ec690f9dde138c813161dcd1803 Mon Sep 17 00:00:00 2001
From: Ozkan Sezer <[EMAIL REDACTED]>
Date: Tue, 23 Nov 2021 14:22:02 +0300
Subject: [PATCH] testgamecontroller.c: fixed -Wshadow warnings.

---
 test/testgamecontroller.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/test/testgamecontroller.c b/test/testgamecontroller.c
index acd6382f7c6..28d47bf710c 100644
--- a/test/testgamecontroller.c
+++ b/test/testgamecontroller.c
@@ -244,12 +244,12 @@ LoadTexture(SDL_Renderer *renderer, const char *file, SDL_bool transparent)
     return texture;
 }
 
-static Uint16 ConvertAxisToRumble(Sint16 axis)
+static Uint16 ConvertAxisToRumble(Sint16 axisval)
 {
     /* Only start rumbling if the axis is past the halfway point */
     const Sint16 half_axis = (Sint16)SDL_ceil(SDL_JOYSTICK_AXIS_MAX / 2.0f);
-    if (axis > half_axis) {
-        return (Uint16)(axis - half_axis) * 4;
+    if (axisval > half_axis) {
+        return (Uint16)(axisval - half_axis) * 4;
     } else {
         return 0;
     }
@@ -539,7 +539,7 @@ main(int argc, char *argv[])
         SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't initialize SDL: %s\n", SDL_GetError());
         return 1;
     }
-    
+
     SDL_GameControllerAddMappingsFromFile("gamecontrollerdb.txt");
 
     /* Print information about the mappings */