Fix some nits (#13)

Author: HyukjinKwon

sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/csvExpressions.scala

@@ -78,8 +78,7 @@ case class CsvToStructs(
   @transient
   lazy val converter = (rows: Iterator[InternalRow]) => {
     if (rows.hasNext) {
-      rows.next()
-      val result = rows.next
+      val result = rows.next()
       // CSV's parser produces one record only.
       assert(!rows.hasNext)
       result

sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/csv/CSVUtilsSuite.scala renamed to sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/csv/CSVExprUtilsSuite.scala

@@ -19,7 +19,7 @@ package org.apache.spark.sql.catalyst.csv
 
 import org.apache.spark.SparkFunSuite
 
-class CSVExpressionUtilsSuite extends SparkFunSuite {
+class CSVExprUtilsSuite extends SparkFunSuite {
   test("Can parse escaped characters") {
     assert(CSVExprUtils.toChar("""\t""") === '\t')
     assert(CSVExprUtils.toChar("""\r""") === '\r')