From e0fa2ce40f03add01bb3d934480e74e3ee64dd6c Mon Sep 17 00:00:00 2001
From: Sergei Golubchik <serg@mariadb.org>
Date: Tue, 14 Feb 2017 18:04:35 +0100
Subject: [PATCH] bugfix: uninitialized variable

fixes crashes on win32-debug
---
 sql/item_jsonfunc.cc | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/sql/item_jsonfunc.cc b/sql/item_jsonfunc.cc
index d955ddb53df..59d49b81d4a 100644
--- a/sql/item_jsonfunc.cc
+++ b/sql/item_jsonfunc.cc
@@ -2978,14 +2978,13 @@ String *Item_func_json_format::val_str(String *str)
 {
   String *js= args[0]->val_str(&tmp_js);
   json_engine_t je;
-  int tab_size;
+  int tab_size= 4;
 
   if ((null_value= args[0]->null_value))
     return 0;
 
   if (fmt == DETAILED)
   {
-    tab_size= 4;
     if (arg_count > 1)
     {
       tab_size= args[1]->val_int();