Update copyright years

[stockfish] / src / thread_win32_osx.h

diff --git a/src/thread_win32_osx.h b/src/thread_win32_osx.h
index c4b55a4812b96e9889864970b173d70fe752e12b..a0e4d1994f8af4324a0178cfa8943065c21812d0 100644 (file)
--- a/src/thread_win32_osx.h
+++ b/src/thread_win32_osx.h
@@ -1,6 +1,6 @@
 /*
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
-  Copyright (C) 2004-2020 The Stockfish developers (see AUTHORS file)
+  Copyright (C) 2004-2021 The Stockfish developers (see AUTHORS file)
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -27,7 +27,7 @@
 /// The implementation calls pthread_create() with the stack size parameter
 /// equal to the linux 8MB default, on platforms that support it.
 
-#if defined(__APPLE__) || defined(__MINGW32__) || defined(__MINGW64__)
+#if defined(__APPLE__) || defined(__MINGW32__) || defined(__MINGW64__) || defined(USE_PTHREADS)
 
 #include <pthread.h>