Add a helper to get a CXXConstructExpr from a CXXNewExpr.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@152433 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/clang/AST/ExprCXX.h b/include/clang/AST/ExprCXX.h
index 4b7bfde..178a9ce 100644
--- a/include/clang/AST/ExprCXX.h
+++ b/include/clang/AST/ExprCXX.h
@@ -1553,6 +1553,11 @@
     return hasInitializer() ? cast<Expr>(SubExprs[Array]) : 0;
   }
 
+  /// \brief Returns the CXXConstructExpr from this new-expression, or NULL.
+  const CXXConstructExpr* getConstructExpr() {
+    return dyn_cast_or_null<CXXConstructExpr>(getInitializer());
+  }
+
   /// Answers whether the usual array deallocation function for the
   /// allocated type expects the size of the allocation as a
   /// parameter.