Fix poliqarpcorpusreader/poliqarpdocumentreader

libcorpus2_whole/io/poliqarpcorpusreader.cpp

@@ -17,7 +17,10 @@ boost::shared_ptr<Corpus> PoliqarpCorpusReader::read(const std::string& corpus_f
 	this->pq_doc_reader_ = boost::shared_ptr<PoliqarpDocumentReader>(
 			new PoliqarpDocumentReader(tagset_, corpus_file));
 
-	while ((doc = this->pq_doc_reader_->read())) {
+	while (1) {
+		if (!(doc = this->pq_doc_reader_->read())) {
+			break;
+		}
 		corpus->add_document(doc);
 	}
 

libcorpus2_whole/io/poliqarpdocumentreader.cpp

@@ -12,9 +12,11 @@ PoliqarpDocumentReader::PoliqarpDocumentReader(const Tagset& tagset, const std::
 
 boost::shared_ptr<Document> PoliqarpDocumentReader::read()
 {
-	boost::shared_ptr<Document> document = boost::make_shared<Document>();
+	boost::shared_ptr<Document> document;
 	boost::shared_ptr<Chunk> chunk = this->pqr_->get_next_chunk();
+
 	if (chunk) {
+		document = boost::make_shared<Document>();
 		document->add_paragraph(chunk);
 	}
 	return document;