Fix mangling of direct json_pointer access

common/settings/color_settings.cpp

@@ -270,7 +270,7 @@ bool COLOR_SETTINGS::MigrateFromLegacy( wxConfigBase* aCfg )
     return false;
 }
 
-#include <iostream>
+
 bool COLOR_SETTINGS::migrateSchema0to1()
 {
     /**

include/settings/json_settings_internals.h

@@ -58,6 +58,11 @@ public:
         return at( PointerFromString( aPath ) );
     }
 
+    nlohmann::json& operator[]( const nlohmann::json::json_pointer& aPointer )
+    {
+        return nlohmann::json::operator[]( aPointer );
+    }
+
     nlohmann::json& operator[]( const std::string& aPath )
     {
         return nlohmann::json::operator[]( PointerFromString( aPath ) );