SDL: Fixed spinning at a very high framerate

SDL Commits
1 
From 6bcf2c152156989e419f76c3f2d716bdcf5c546d Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Fri, 2 Sep 2022 15:06:49 -0700
Subject: [PATCH] Fixed spinning at a very high framerate

---
 test/testjoystick.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/test/testjoystick.c b/test/testjoystick.c
index db9a3a15664..91d02de5be2 100644
--- a/test/testjoystick.c
+++ b/test/testjoystick.c
@@ -259,6 +259,7 @@ loop(void *arg)
         }
     }
 
+    SDL_Delay(16);
     SDL_RenderPresent(screen);
 
 #ifdef __EMSCRIPTEN__