SDL: Allow quitting controllermap if there are no controllers attached

SDL Commits
1 
From 8726f500ef7aabda724e01c085fb4f0bb2027442 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Tue, 3 Aug 2021 01:10:48 -0700
Subject: [PATCH] Allow quitting controllermap if there are no controllers
 attached

---
 test/controllermap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/test/controllermap.c b/test/controllermap.c
index d55dc80460..f81528ea25 100644
--- a/test/controllermap.c
+++ b/test/controllermap.c
@@ -746,7 +746,7 @@ main(int argc, char *argv[])
         return 2;
     }
 
-    while (SDL_NumJoysticks() == 0) {
+    while (!done && SDL_NumJoysticks() == 0) {
         SDL_Event event;
 
         while (SDL_PollEvent(&event) > 0) {