If calling to hdfsCloseFile() returns -1 then just calls LogError() rather than returns an abnormal Status

In HdfsTableSink::ClosePartitionFile function, if calling to hdfsCloseFile returns -1, just log and print the error. Actually, if fail to close hdfs file, the consequence may be very serious. In the case of calling to hdfsCloseFile returns -1 and the error is not handled, writing data to hdfs may be unsuccessful and the Impala user will never knew this situation and the data was lost.