Fix C++03 build

llvm-svn: 288555
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: 5877920183809117560cded151e054f720fcee18
diff --git a/include/memory b/include/memory
index e4cb58b..8a3237f 100644
--- a/include/memory
+++ b/include/memory
@@ -3352,7 +3352,7 @@
       size_t second;
     };
     typedef __scalar_hash<_PairT> _HashT;
-    const _PairT __p{__lhs, __rhs};
+    const _PairT __p = {__lhs, __rhs};
     return _HashT()(__p);
 }