Merge pull request #3629 from tronprotocol/hotfix/addnseexcpetion

add NoSuchElementException

Author: MiraculousWang

common/src/main/java/org/tron/common/utils/ByteArrayMap.java

@@ -24,6 +24,7 @@
 import java.util.HashMap;
 import java.util.Iterator;
 import java.util.Map;
+import java.util.NoSuchElementException;
 import java.util.Set;
 import org.tron.core.db.ByteArrayWrapper;
 
@@ -154,6 +155,9 @@ public boolean hasNext() {
 
         @Override
         public Entry<byte[], V> next() {
+          if (!hasNext()) {
+            throw new NoSuchElementException();
+          }
           Entry<ByteArrayWrapper, V> next = it.next();
           return Maps.immutableEntry(next.getKey().getData(), next.getValue());
         }

common/src/main/java/org/tron/common/utils/ByteArraySet.java

@@ -22,6 +22,7 @@
 import java.util.Collection;
 import java.util.HashSet;
 import java.util.Iterator;
+import java.util.NoSuchElementException;
 import java.util.Set;
 import org.tron.core.db.ByteArrayWrapper;
 
@@ -68,6 +69,9 @@ public boolean hasNext() {
 
       @Override
       public byte[] next() {
+        if (!hasNext()) {
+          throw new NoSuchElementException();
+        }
         return it.next().getData();
       }