Fix up uses of new/terminate/unexpected handlers to use the new getters.

llvm-svn: 120914
diff --git a/libcxx/src/new.cpp b/libcxx/src/new.cpp
index a3783d4..e0bb734 100644
--- a/libcxx/src/new.cpp
+++ b/libcxx/src/new.cpp
@@ -36,8 +36,9 @@
     {
         // If malloc fails and there is a new_handler,
         // call it to try free up memory.
-        if (__new_handler)
-            __new_handler();
+        std::new_handler nh = get_new_handler();
+        if (nh)
+            nh();
         else
 #ifndef _LIBCPP_NO_EXCEPTIONS
             throw std::bad_alloc();