Add missing include of <climits> header.

asio/include/asio/detail/thread_info_base.hpp

diff --git a/asio/include/asio/detail/thread_info_base.hpp b/asio/include/asio/detail/thread_info_base.hpp
index 9da68b3..bbc43ae 100644
--- a/asio/include/asio/detail/thread_info_base.hpp
+++ b/asio/include/asio/detail/thread_info_base.hpp
@@ -15,6 +15,7 @@
 # pragma once
 #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
 
+#include <climits>
 #include <cstddef>
 #include "asio/detail/noncopyable.hpp"