Removed redundant checks for __CYGWIN__ that are excluded by BOOST_WINDOWS.

Author: Lastique

include/boost/log/detail/timestamp.hpp

@@ -18,7 +18,7 @@
 
 #include <boost/cstdint.hpp>
 #include <boost/log/detail/config.hpp>
-#if defined(BOOST_WINDOWS) && !defined(__CYGWIN__)
+#if defined(BOOST_WINDOWS)
 #include <boost/winapi/basic_types.hpp>
 #endif
 #include <boost/log/detail/header.hpp>
@@ -43,7 +43,7 @@ class duration
 public:
     explicit duration(int64_t ticks = 0) BOOST_NOEXCEPT : m_ticks(ticks) {}
 
-#if defined(BOOST_WINDOWS) && !defined(__CYGWIN__)
+#if defined(BOOST_WINDOWS)
     int64_t milliseconds() const { return m_ticks; }
 #else
     BOOST_LOG_API int64_t milliseconds() const;
@@ -74,7 +74,7 @@ class timestamp
  * be affected by clock changes, either manual or seasonal. Also, it
  * should be as fast as possible.
  */
-#if defined(BOOST_WINDOWS) && !defined(__CYGWIN__)
+#if defined(BOOST_WINDOWS)
 
 typedef uint64_t (BOOST_WINAPI_WINAPI_CC* get_tick_count_t)();
 extern BOOST_LOG_API get_tick_count_t get_tick_count;

src/timestamp.cpp

@@ -16,7 +16,7 @@
 #include <boost/log/detail/config.hpp>
 #include <boost/log/detail/timestamp.hpp>
 
-#if defined(BOOST_WINDOWS) && !defined(__CYGWIN__)
+#if defined(BOOST_WINDOWS)
 #include <cstddef>
 #include <cstdlib>
 #include <boost/memory_order.hpp>
@@ -47,7 +47,7 @@ BOOST_LOG_OPEN_NAMESPACE
 
 namespace aux {
 
-#if defined(BOOST_WINDOWS) && !defined(__CYGWIN__)
+#if defined(BOOST_WINDOWS)
 
 #if BOOST_USE_WINAPI_VERSION >= BOOST_WINAPI_VERSION_WIN6