Reduced lock contention when playing and immediately querying the status of a SoundStream.

src/SFML/Audio/SoundStream.cpp

@@ -274,6 +274,7 @@ void SoundStream::streamData()
             m_isStreaming = false;
             return;
         }
+    }
 
     // Create the buffers
     alCheck(alGenBuffers(BufferCount, m_buffers));
@@ -286,6 +287,9 @@ void SoundStream::streamData()
     // Play the sound
     alCheck(alSourcePlay(m_source));
 
+    {
+        Lock lock(m_threadMutex);
+
         // Check if the thread was launched Paused
         if (m_threadStartState == Paused)
             alCheck(alSourcePause(m_source));