[510040] Fix 'New...' button label initialization

Bug: 510040
Change-Id: I7f0eb49e48f989e52dfe8a46553c5e626f09214b
Signed-off-by: Pierre-Charles David <pierre-charles.david@obeo.fr>
diff --git a/plugins/org.eclipse.sirius.ui.editor/src/org/eclipse/sirius/ui/editor/Messages.java b/plugins/org.eclipse.sirius.ui.editor/src/org/eclipse/sirius/ui/editor/Messages.java
index 645ccd0..2a8532f 100644
--- a/plugins/org.eclipse.sirius.ui.editor/src/org/eclipse/sirius/ui/editor/Messages.java
+++ b/plugins/org.eclipse.sirius.ui.editor/src/org/eclipse/sirius/ui/editor/Messages.java
@@ -53,7 +53,7 @@
     public static String UI_SessionEditor_models_button_newSemanticModel;
 
     @TranslatableMessage
-    public static String UI_SessionEditor_new_semantic_model_action_label = null;
+    public static String UI_SessionEditor_new_semantic_model_action_label;
     
     @TranslatableMessage
     public static String UI_SessionEditor_viewpoints_description;