fix #188 should not iterate when array is empty

Author: taowen

src/main/java/com/jsoniter/any/ArrayLazyAny.java

@@ -172,7 +172,7 @@ private Any fillCacheUntil(int target) {
             if (lastParsedPos == head) {
                 if (!CodegenAccess.readArrayStart(iter)) {
                     lastParsedPos = tail;
-                    throw new IndexOutOfBoundsException();
+                    return null;
                 }
                 Any element = iter.readAny();
                 cache.add(element);

src/test/java/com/jsoniter/any/TestList.java

@@ -1,10 +1,12 @@
 package com.jsoniter.any;
 
+import com.jsoniter.JsonIterator;
 import junit.framework.TestCase;
 
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collections;
+import java.util.Iterator;
 
 public class TestList extends TestCase {
     public void test_size() {
@@ -52,4 +54,10 @@ public void test_to_string() {
         any.asList().add(Any.wrap(4));
         assertEquals("[1,2,3,4]", any.toString());
     }
+
+    public void test_for_each() {
+        Any a = JsonIterator.deserialize("[]");
+        Iterator<Any> iter = a.iterator();
+        assertFalse(iter.hasNext());
+    }
 }