SDL: Ignore checkkeysthreads

From 0f00f6dd860643381c62836ccf305a7a15e19070 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Tue, 6 Jul 2021 10:01:31 -0700
Subject: [PATCH] Ignore checkkeysthreads

---
 .gitignore | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.gitignore b/.gitignore
index 7f5da9cd61..8a9e566680 100644
--- a/.gitignore
+++ b/.gitignore
@@ -94,6 +94,7 @@ VisualC/visualtest/testsprite2_sample.parameters
 android-project/local.properties
 
 test/checkkeys
+test/checkkeysthreads
 test/controllermap
 test/loopwave
 test/loopwavequeue