Make __cxa_new_handler un-mangled

llvm-svn: 155763
diff --git a/libcxxabi/src/cxa_handlers.cpp b/libcxxabi/src/cxa_handlers.cpp
index 100fc50..6c13fcd 100644
--- a/libcxxabi/src/cxa_handlers.cpp
+++ b/libcxxabi/src/cxa_handlers.cpp
@@ -101,7 +101,7 @@
     __terminate(get_terminate());
 }
 
-new_handler __cxa_new_handler = 0;
+extern "C" new_handler __cxa_new_handler = 0;
 // In the future these will become:
 // std::atomic<std::new_handler>  __cxa_new_handler(0);