Reword comment for accuracy

Fixing a mistake I made in 0d1df40.

src/lime/_internal/backend/native/NativeAudioSource.hx

@@ -294,9 +294,9 @@ class NativeAudioSource
 
 			AL.sourceQueueBuffers(handle, numBuffers, buffers);
 
-			// OpenAL can unexpectedly stop playback if the buffers fill up,
-			// which typically happens if an operation (such as resizing a
-			// window) freezes the main thread.
+			// OpenAL can unexpectedly stop playback if the buffers run out
+			// of data, which typically happens if an operation (such as
+			// resizing a window) freezes the main thread.
 			// If AL is supposed to be playing but isn't, restart it here.
 			if (playing && handle != null && AL.getSourcei(handle, AL.SOURCE_STATE) == AL.STOPPED){
 				AL.sourcePlay(handle);