Revert "Revert "Make CXXNewExpr contain only a single initialier, and not hold the used constructor itself.""

This reintroduces commit r150682 with a fix for the Bullet benchmark crash.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150685 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/libclang/CIndex.cpp b/tools/libclang/CIndex.cpp
index beec4d2..2ab693e 100644
--- a/tools/libclang/CIndex.cpp
+++ b/tools/libclang/CIndex.cpp
@@ -1856,9 +1856,8 @@
     AddStmt(E->getBase());
 }
 void EnqueueVisitor::VisitCXXNewExpr(CXXNewExpr *E) {
-  // Enqueue the initializer or constructor arguments.
-  for (unsigned I = E->getNumConstructorArgs(); I > 0; --I)
-    AddStmt(E->getConstructorArg(I-1));
+  // Enqueue the initializer , if any.
+  AddStmt(E->getInitializer());
   // Enqueue the array size, if any.
   AddStmt(E->getArraySize());
   // Enqueue the allocated type.