If the flush fails, don't clear the buffer. That way, if Flush() is called multiple

times, and for some reason it succeeds on the second call (eg. more disk
space is now available), we don't lose that data.

stepmania/src/RageFileDriverDirect.cpp

@@ -352,6 +352,7 @@ int RageFileObjDirect::FlushInternal()
 	{
 		LOG->Warn("Error writing %s: %s", this->m_sPath.c_str(), strerror(errno) );
 		SetError( strerror(errno) );
+		return -1;
 	}
 
 	m_sWriteBuf.erase();