G M suggestion: conditionally include files on _WIN32.



git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@195045 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/src/random.cpp b/src/random.cpp
index 47cdee4..bd24f2e 100644
--- a/src/random.cpp
+++ b/src/random.cpp
@@ -19,8 +19,10 @@
 #ifdef __sun__
 #define rename solaris_headers_are_broken
 #endif
+#if !defined(_WIN32)
 #include <fcntl.h>
 #include <unistd.h>
+#endif // defined(_WIN32)
 #include <errno.h>
 
 _LIBCPP_BEGIN_NAMESPACE_STD