Windows build fix: ignore pthread.h if it exists (#4989)

diff --git a/includes/rts/OSThreads.h b/includes/rts/OSThreads.h
index a24459c..c70f418 100644 (file)
--- a/includes/rts/OSThreads.h
+++ b/includes/rts/OSThreads.h
@@ -17,7 +17,7 @@
 
 #if defined(THREADED_RTS) /* to the end */
 
-# if defined(HAVE_PTHREAD_H) && !defined(WANT_NATIVE_WIN32_THREADS)
+#if defined(HAVE_PTHREAD_H) && !defined(mingw32_HOST_OS)
 
 #if CMINUSMINUS