Only save settings that has been changed

src/transcoder/transcoderoptionswavpack.cpp

@@ -39,13 +39,17 @@ TranscoderOptionsWavPack::~TranscoderOptionsWavPack() {
 }
 
 void TranscoderOptionsWavPack::Load() {
+
   QSettings s;
   s.beginGroup(kSettingsGroup + settings_postfix_);
   s.endGroup();
+
 }
 
 void TranscoderOptionsWavPack::Save() {
+
   QSettings s;
   s.beginGroup(kSettingsGroup + settings_postfix_);
   s.endGroup();
+
 }