fixed NPE during renaming lights.

Author: JavaSaBr

src/main/java/com/ss/editor/ui/control/model/node/light/LightTreeNode.java

@@ -43,7 +43,8 @@ public LightTreeNode(@NotNull final T element, final long objectId) {
     public void changeName(@NotNull final NodeTree<?> nodeTree, @NotNull final String newName) {
         final T element = getElement();
         final ChangeConsumer consumer = notNull(nodeTree.getChangeConsumer());
-        consumer.execute(new RenameLightOperation(element.getName(), newName, element));
+        final String currentName = element.getName();
+        consumer.execute(new RenameLightOperation(currentName == null ? "" : currentName, newName, element));
     }
 
     @Override

src/main/java/com/ss/editor/ui/control/model/tree/action/light/AbstractCreateLightAction.java

@@ -6,11 +6,10 @@
 import com.ss.editor.annotation.FXThread;
 import com.ss.editor.model.undo.editor.ChangeConsumer;
 import com.ss.editor.model.undo.editor.ModelChangeConsumer;
-import com.ss.editor.ui.control.tree.action.AbstractNodeAction;
 import com.ss.editor.ui.control.model.tree.action.operation.AddLightOperation;
 import com.ss.editor.ui.control.tree.NodeTree;
+import com.ss.editor.ui.control.tree.action.AbstractNodeAction;
 import com.ss.editor.ui.control.tree.node.TreeNode;
-
 import org.jetbrains.annotations.NotNull;
 
 /**
@@ -32,6 +31,10 @@ protected void process() {
         final NodeTree<?> nodeTree = getNodeTree();
 
         final Light light = createLight();
+        if (light.getName() == null) {
+            light.setName("");
+        }
+
         final TreeNode<?> treeNode = getNode();
         final Node element = (Node) treeNode.getElement();