[unrelated] Fix UniqueList.clear()
diff --git a/plugins/org.eclipse.ocl.pivot/src/org/eclipse/ocl/pivot/utilities/UniqueList.java b/plugins/org.eclipse.ocl.pivot/src/org/eclipse/ocl/pivot/utilities/UniqueList.java
index e0ea360..67b012c 100644
--- a/plugins/org.eclipse.ocl.pivot/src/org/eclipse/ocl/pivot/utilities/UniqueList.java
+++ b/plugins/org.eclipse.ocl.pivot/src/org/eclipse/ocl/pivot/utilities/UniqueList.java
@@ -104,6 +104,7 @@
 
 	@Override
 	public void clear() {
+		super.clear();
 		set = null;
 	}