Use default

src/core/settingsprovider.cpp

@@ -23,9 +23,9 @@
 
 #include "settingsprovider.h"
 
-SettingsProvider::SettingsProvider() {}
+SettingsProvider::SettingsProvider() = default;
 
-DefaultSettingsProvider::DefaultSettingsProvider() {}
+DefaultSettingsProvider::DefaultSettingsProvider() = default;
 
 void DefaultSettingsProvider::set_group(const char *group) {
   while (!backend_.group().isEmpty()) backend_.endGroup();

src/core/song.cpp

@@ -275,8 +275,8 @@ Song::Private::Private(Song::Source source)
       {}
 
 Song::Song(Song::Source source) : d(new Private(source)) {}
-Song::Song(const Song &other) : d(other.d) {}
-Song::~Song() {}
+Song::Song(const Song &other) = default;
+Song::~Song() = default;
 
 Song &Song::operator=(const Song &other) {
   d = other.d;