Audio: Minor fixes

src/Nazara/Audio/Formats/sndfileLoader.cpp

@@ -308,7 +308,7 @@ namespace Nz
 
 		std::shared_ptr<SoundStream> LoadSoundStreamStream(Stream& stream, const SoundStreamParams& parameters)
 		{
-			std::unique_ptr<sndfileStream> soundStream(new sndfileStream);
+			std::shared_ptr<sndfileStream> soundStream = std::make_shared<sndfileStream>();
 			if (!soundStream->Open(stream, parameters.forceMono))
 			{
 				NazaraError("Failed to open music stream");

src/Nazara/Audio/Music.cpp

@@ -497,9 +497,9 @@ namespace Nz
 	void Music::StopThread()
 	{
 		if (m_impl->streaming)
-		{
 			m_impl->streaming = false;
+
+		if (m_impl->thread.joinable())
 			m_impl->thread.join();
-		}
 	}
 }

src/Nazara/Audio/Sound.cpp

@@ -119,15 +119,6 @@ namespace Nz
 		return m_buffer != nullptr;
 	}
 
-	/*!
-	* \brief Checks whether the sound is playing
-	* \return true if it is the case
-	*/
-	bool Sound::IsPlaying() const
-	{
-		return GetStatus() == SoundStatus::Playing;
-	}
-
 	/*!
 	* \brief Loads the sound from file
 	* \return true if loading is successful