no need to manually propagate error messages

stepmania/src/RageSoundReader_Extend.cpp

@@ -113,9 +113,6 @@ int RageSoundReader_Extend::Read( char *pBuffer, int iFrames )
 		return STREAM_LOOPED;
 	}
 
-	if( iFramesRead == RageSoundReader::ERROR )
-		this->SetError( m_pSource->GetError() );
-
 	return iFramesRead;
 }
 

stepmania/src/RageSoundReader_Pan.cpp

@@ -13,10 +13,7 @@ int RageSoundReader_Pan::Read( char *pBuf, int iFrames )
 {
 	iFrames = m_pSource->Read( pBuf, iFrames );
 	if( iFrames < 0 )
-	{
-		this->SetError( m_pSource->GetError() );
 		return iFrames;
-	}
 
 	int iSamples = iFrames * m_pSource->GetNumChannels();
 	

stepmania/src/RageSoundReader_Resample_Good.cpp

@@ -713,12 +713,8 @@ int RageSoundReader_Resample_Good::Read( char *pBuf_, int iFrames )
 		int16_t *pTmpBuf = (int16_t *) alloca( iFramesNeeded * sizeof(int16_t) * iChannels );
 		ASSERT( pTmpBuf );
 		int iFramesIn = m_pSource->Read( (char *) pTmpBuf, iFramesNeeded );
-
 		if( iFramesIn < 0 )
-		{
-			SetError( m_pSource->GetError() );
 			return iFramesIn;
-		}
 
 		const int iSamplesIn = iFramesIn * iChannels;
 

stepmania/src/RageSoundReader_ThreadedBuffer.cpp

@@ -296,9 +296,6 @@ int RageSoundReader_ThreadedBuffer::FillBlock()
 
 	m_bEOF = (iGotFrames == END_OF_FILE);
 
-	if( iGotFrames < 0 && iGotFrames != END_OF_FILE )
-		SetError( m_pSource->GetError() );
-
 	return iGotFrames;
 }