SDL: Fixed warning C4245: 'return': conversion from 'int' to 'SDL_TimerID', signed/unsigned mismatch

From 62221b3003cb32edff8b199081f7bd58641db4cc Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Sat, 3 Feb 2024 11:08:52 -0800
Subject: [PATCH] Fixed warning C4245: 'return': conversion from 'int' to
 'SDL_TimerID', signed/unsigned mismatch

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

diff --git a/src/test/SDL_test_harness.c b/src/test/SDL_test_harness.c
index eb0cdaed2e2f..909368242239 100644
--- a/src/test/SDL_test_harness.c
+++ b/src/test/SDL_test_harness.c
@@ -183,19 +183,19 @@ static SDL_TimerID SDLTest_SetTestTimeout(int timeout, void(SDLCALL *callback)(v
 
     if (!callback) {
         SDLTest_LogError("Timeout callback can't be NULL");
-        return -1;
+        return 0;
     }
 
     if (timeout < 0) {
         SDLTest_LogError("Timeout value must be bigger than zero.");
-        return -1;
+        return 0;
     }
 
     /* Init SDL timer if not initialized before */
     if (SDL_WasInit(SDL_INIT_TIMER) == 0) {
         if (SDL_InitSubSystem(SDL_INIT_TIMER)) {
             SDLTest_LogError("Failed to init timer subsystem: %s", SDL_GetError());
-            return -1;
+            return 0;
         }
     }
 
@@ -204,7 +204,7 @@ static SDL_TimerID SDLTest_SetTestTimeout(int timeout, void(SDLCALL *callback)(v
     timerID = SDL_AddTimer(timeoutInMilliseconds, (SDL_TimerCallback)callback, 0x0);
     if (timerID == 0) {
         SDLTest_LogError("Creation of SDL timer failed: %s", SDL_GetError());
-        return -1;
+        return 0;
     }
 
     return timerID;