HDFS-15626. TestWebHDFS.testLargeDirectory failing (#2380)

Fixes the regression caused by HADOOP-17281, where the WebHDFS client
listStatusIterator (correctly) throws NoSuchElementException when next()
runs out of values.

Contributed by Mukund Thakur.

Change-Id: I6cec41c20467920cf21f169653553535414b2680

hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/web/TestWebHDFS.java

@@ -55,6 +55,7 @@
 import java.util.EnumSet;
 import java.util.Iterator;
 import java.util.Map;
+import java.util.NoSuchElementException;
 import java.util.Random;
 
 import com.google.common.collect.ImmutableList;
@@ -404,7 +405,7 @@ public Void run() throws IOException, URISyntaxException {
             try {
               it.next();
               fail("Iterator should error if out of elements.");
-            } catch (IllegalStateException e) {
+            } catch (NoSuchElementException e) {
               // pass
             }
             return null;