Fix windows build.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79845 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/raw_ostream.cpp b/lib/Support/raw_ostream.cpp
index 2e15111..2181cce 100644
--- a/lib/Support/raw_ostream.cpp
+++ b/lib/Support/raw_ostream.cpp
@@ -343,7 +343,7 @@
   
   int OpenFlags = O_WRONLY|O_CREAT;
 #ifdef O_BINARY
-  if (Binary)
+  if (Flags & F_Binary)
     OpenFlags |= O_BINARY;
 #endif