From 5405ae860117f55f9b5af287a7006dd64cef9eaa Mon Sep 17 00:00:00 2001
From: Niels <niels.lohmann@gmail.com>
Date: Sat, 30 Jul 2016 10:50:53 +0200
Subject: [PATCH] added default value

---
 src/json.hpp      | 2 +-
 src/json.hpp.re2c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/json.hpp b/src/json.hpp
index 565c0415f..9d2305d85 100644
--- a/src/json.hpp
+++ b/src/json.hpp
@@ -8991,7 +8991,7 @@ basic_json_parser_63:
         /// current level of recursion
         int depth = 0;
         /// callback function
-        const parser_callback_t callback;
+        const parser_callback_t callback = nullptr;
         /// the type of the last read token
         typename lexer::token_type last_token = lexer::token_type::uninitialized;
         /// the lexer
diff --git a/src/json.hpp.re2c b/src/json.hpp.re2c
index 26fafa543..537d4f4da 100644
--- a/src/json.hpp.re2c
+++ b/src/json.hpp.re2c
@@ -8288,7 +8288,7 @@ class basic_json
         /// current level of recursion
         int depth = 0;
         /// callback function
-        const parser_callback_t callback;
+        const parser_callback_t callback = nullptr;
         /// the type of the last read token
         typename lexer::token_type last_token = lexer::token_type::uninitialized;
         /// the lexer