Add missing include to lib/Support/Windows/Process.inc
Needed for rev a75f97ed1ba76dfef4374cedc4a04439631c584d
diff --git a/lib/Support/Windows/Process.inc b/lib/Support/Windows/Process.inc
index 3daae95..a64c6c3 100644
--- a/lib/Support/Windows/Process.inc
+++ b/lib/Support/Windows/Process.inc
@@ -11,6 +11,7 @@
//
//===----------------------------------------------------------------------===//
+#include "llvm/ADT/Hashing.h"
#include "llvm/Support/Allocator.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/WindowsError.h"
