Merge pull request Tencent#1720 from madeso/master

Fixes issue Tencent#1718

Author: miloyip

include/rapidjson/writer.h

@@ -283,6 +283,8 @@ class Writer {
         os_->Flush();
     }
 
+    static const size_t kDefaultLevelDepth = 32;
+
 protected:
     //! Information for each nested level
     struct Level {
@@ -291,8 +293,6 @@ class Writer {
         bool inArray;       //!< true if in array, otherwise in object
     };
 
-    static const size_t kDefaultLevelDepth = 32;
-
     bool WriteNull()  {
         PutReserve(*os_, 4);
         PutUnsafe(*os_, 'n'); PutUnsafe(*os_, 'u'); PutUnsafe(*os_, 'l'); PutUnsafe(*os_, 'l'); return true;