fix test failure of HiveThriftBinaryServerSuite.SPARK-4407

Author: kiszk

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

@@ -146,7 +146,7 @@ private [sql] object GenArrayData {
 
       (s"""
         byte[] $arrayName = new byte[$unsafeArraySizeInBytes];
-        $arrayDataName = new UnsafeArrayData();
+        UnsafeArrayData $arrayDataName = new UnsafeArrayData();
         Platform.putLong($arrayName, $baseOffset, $numElements);
         $arrayDataName.pointTo($arrayName, $baseOffset, $unsafeArraySizeInBytes);
       """,