Use Collections.emptyIterator()

h2/src/main/org/h2/index/PageDataIndex.java

@@ -491,8 +491,7 @@ public class PageDataIndex extends PageIndex {
 
     Iterator<Row> getDelta() {
         if (delta == null) {
-            List<Row> e = Collections.emptyList();
-            return e.iterator();
+            return Collections.emptyIterator();
         }
         return delta.iterator();
     }

h2/src/main/org/h2/index/ScanIndex.java

@@ -251,8 +251,7 @@ public class ScanIndex extends BaseIndex {
 
     Iterator<Row> getDelta() {
         if (delta == null) {
-            List<Row> e = Collections.emptyList();
-            return e.iterator();
+            return Collections.emptyIterator();
         }
         return delta.iterator();
     }

h2/src/main/org/h2/mvstore/db/MVPrimaryIndex.java

@@ -258,7 +258,7 @@ public class MVPrimaryIndex extends BaseIndex {
         ValueLong v = (ValueLong) (first ? map.firstKey() : map.lastKey());
         if (v == null) {
             return new MVStoreCursor(session,
-                    Collections.<Entry<Value, Value>> emptyList().iterator());
+                    Collections.<Entry<Value, Value>> emptyIterator());
         }
         Value value = map.get(v);
         Entry<Value, Value> e = new AbstractMap.SimpleImmutableEntry<Value, Value>(v, value);

h2/src/main/org/h2/mvstore/db/MVSecondaryIndex.java

@@ -307,7 +307,7 @@ public final class MVSecondaryIndex extends BaseIndex implements MVIndex {
             }
             if (min == null) {
                 return new MVStoreCursor(session,
-                        Collections.<Value>emptyList().iterator(), null);
+                        Collections.<Value>emptyIterator(), null);
             }
         }
         return new MVStoreCursor(session, map.keyIterator(min), last);
@@ -394,7 +394,7 @@ public final class MVSecondaryIndex extends BaseIndex implements MVIndex {
         while (true) {
             if (key == null) {
                 return new MVStoreCursor(session,
-                        Collections.<Value>emptyList().iterator(), null);
+                        Collections.<Value>emptyIterator(), null);
             }
             if (((ValueArray) key).getList()[0] != ValueNull.INSTANCE) {
                 break;