JAL-2744 handle null features list

diff --git a/src/jalview/gui/PopupMenu.java b/src/jalview/gui/PopupMenu.java
index b574ddd..8e9bade 100644 (file)
--- a/src/jalview/gui/PopupMenu.java
+++ b/src/jalview/gui/PopupMenu.java
@@ -528,7 +528,7 @@ public class PopupMenu extends JPopupMenu implements ColourChangeListener
    */
   protected void addFeatureDetails(List<SequenceFeature> features)
   {
-    if (features.isEmpty())
+    if (features == null || features.isEmpty())
     {
       return;
     }