Reduced code size

include/ArduinoJson/Internals/JsonBufferAllocated.hpp

@@ -14,6 +14,7 @@ namespace Internals {
 class JsonBufferAllocated {
  public:
   void *operator new(size_t n, JsonBuffer *jsonBuffer) throw() {
+    if (!jsonBuffer) return NULL;
     return jsonBuffer->alloc(n);
   }
 

include/ArduinoJson/JsonVariantBase.hpp

@@ -79,9 +79,6 @@ class JsonVariantBase {
   FORCE_INLINE const JsonObjectSubscript operator[](const char *key) const;
   FORCE_INLINE const JsonObjectSubscript operator[](const String &key) const;
 
- protected:
-  JsonVariantBase() {}
-
  private:
   const TImpl *impl() const { return static_cast<const TImpl *>(this); }
 };