Index: src/libchcore/TWriteBufferQueueWrapper.cpp
===================================================================
diff -u -N -rb941384e121190b6107f1c99b3233667e3daf4ce -r685d0da3259dd94327ee8d644a88c155585b8249
--- src/libchcore/TWriteBufferQueueWrapper.cpp	(.../TWriteBufferQueueWrapper.cpp)	(revision b941384e121190b6107f1c99b3233667e3daf4ce)
+++ src/libchcore/TWriteBufferQueueWrapper.cpp	(.../TWriteBufferQueueWrapper.cpp)	(revision 685d0da3259dd94327ee8d644a88c155585b8249)
@@ -87,11 +87,6 @@
 		return m_spDataQueue->GetCount();
 	}
 
-	bool TWriteBufferQueueWrapper::IsEmpty() const
-	{
-		return m_spDataQueue->IsEmpty();
-	}
-
 	HANDLE TWriteBufferQueueWrapper::GetHasBuffersEvent() const
 	{
 		return m_eventHasBuffers.Handle();
@@ -104,6 +99,8 @@
 
 	void TWriteBufferQueueWrapper::ReleaseBuffers(const TBufferListPtr& spBuffers)
 	{
+		if(!spBuffers)
+			throw TCoreException(eErr_InvalidArgument, L"spBuffers is NULL", LOCATION);
 		m_spDataQueue->ReleaseBuffers(spBuffers);
 		m_tClaimedQueue.ReleaseBuffers(spBuffers);
 	}