SDL: How did PS2 build without a condition variable implementation?

SDL Commits
1 
From e2432bbd3b8d1b59519133ec51ef06ff70d67cff Mon Sep 17 00:00:00 2001
From: Sam Lantinga <[EMAIL REDACTED]>
Date: Fri, 2 Dec 2022 02:29:25 -0800
Subject: [PATCH] How did PS2 build without a condition variable
 implementation?

---
 CMakeLists.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index a7ddf4f9a674..e570572e6775 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2647,7 +2647,7 @@ elseif(PS2)
   endif()
   if(SDL_THREADS)
     set(SDL_THREAD_PS2 1)
-    file(GLOB PS2_THREAD_SOURCES ${SDL3_SOURCE_DIR}/src/thread/generic/SDL_systls.c ${SDL3_SOURCE_DIR}/src/thread/generic/SDL_sysmutex.c ${SDL3_SOURCE_DIR}/src/thread/ps2/*.c)
+    file(GLOB PS2_THREAD_SOURCES ${SDL3_SOURCE_DIR}/src/thread/generic/SDL_syscond.c ${SDL3_SOURCE_DIR}/src/thread/generic/SDL_sysmutex.c ${SDL3_SOURCE_DIR}/src/thread/generic/SDL_systls.c ${SDL3_SOURCE_DIR}/src/thread/ps2/*.c)
     list(APPEND SOURCE_FILES ${PS2_THREAD_SOURCES})
     set(HAVE_SDL_THREADS TRUE)
   endif()