[NFC] Silence compiler warning [-Wmissing-braces].

clang/lib/CodeGen/CGNonTrivialStruct.cpp:330:7: warning: suggest braces around initialization of subobject [-Wmissing-braces]
  Address(CGF->Builder.CreateLoad(CGF->GetAddrOfLocalVar(Args[Ints])),
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  {
diff --git a/clang/lib/CodeGen/CGNonTrivialStruct.cpp b/clang/lib/CodeGen/CGNonTrivialStruct.cpp
index 73188c4..d134be8 100644
--- a/clang/lib/CodeGen/CGNonTrivialStruct.cpp
+++ b/clang/lib/CodeGen/CGNonTrivialStruct.cpp
@@ -326,9 +326,9 @@
                                             std::array<CharUnits, N> Alignments,
                                             FunctionArgList Args,
                                             CodeGenFunction *CGF) {
-  return std::array<Address, N>{
+  return std::array<Address, N>{{
       Address(CGF->Builder.CreateLoad(CGF->GetAddrOfLocalVar(Args[Ints])),
-              Alignments[Ints])...};
+              Alignments[Ints])...}};
 }
 
 // Template classes that are used as bases for classes that emit special