eliminate some clang warnings.


git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@113438 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/source/Host/macosx/Symbols.cpp b/source/Host/macosx/Symbols.cpp
index 3502ff5..13c2c2d 100644
--- a/source/Host/macosx/Symbols.cpp
+++ b/source/Host/macosx/Symbols.cpp
@@ -25,6 +25,7 @@
 #include "lldb/Core/UUID.h"
 
 #include "Host/macosx/cfcpp/CFCReleaser.h"
+#include "mach/machine.h"
 
 using namespace lldb;
 using namespace lldb_private;