fix test for ExtractWords with empty line

Author: mrchypark

kiwi_test.go

@@ -250,9 +250,9 @@ func TestExtractWordwithFile(t *testing.T) {
 	kb := NewBuilder("./ModelGenerator", 0, KIWI_BUILD_DEFAULT)
 	file, _ := os.Open("./example/test.txt")
 
-	wordInfos, _ := kb.ExtractWords(file, 2 /*=minCnt*/, 5 /*=maxWordLen*/, 0.0 /*=minScore*/, -25.0 /*=posThreshold*/)
+	wordInfos, _ := kb.ExtractWords(file, 10 /*=minCnt*/, 5 /*=maxWordLen*/, 0.0 /*=minScore*/, -25.0 /*=posThreshold*/)
 	assert.Equal(t, WordInfo{
-		Form: "민주적", Freq: 4, POSScore: -3.0096114, Score: 0.1159699,
+		Form: "무위원", Freq: 17, POSScore: -1.7342134, Score: 0.69981515,
 	}, wordInfos[0])
 	assert.Equal(t, 0, kb.Close())
 }