Stop using new[] on llvm::BumpPtrAllocator.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@159833 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/AST/CommentParser.cpp b/lib/AST/CommentParser.cpp
index 75eae46..14a2d85 100644
--- a/lib/AST/CommentParser.cpp
+++ b/lib/AST/CommentParser.cpp
@@ -47,7 +47,8 @@
     TextTokenRetokenizer &Retokenizer,
     unsigned NumArgs) {
   typedef BlockCommandComment::Argument Argument;
-  Argument *Args = new (Allocator) Argument[NumArgs];
+  Argument *Args =
+      new (Allocator.Allocate<Argument>(NumArgs)) Argument[NumArgs];
   unsigned ParsedArgs = 0;
   Token Arg;
   while (ParsedArgs < NumArgs && Retokenizer.lexWord(Arg)) {