Check whether workbench is closing before restore global actions

- If we check this then we don't get a NPE when editing a diagram label and quitting Archi

- We'll still catch exceptions just in case

com.archimatetool.editor/src/com/archimatetool/editor/ui/components/GlobalActionDisablementHandler.java

@@ -104,8 +104,7 @@ public void clearGlobalActions() {
      * Restore the Global Action Handlers that were set to null
      */
     public void restoreGlobalActions() {
-        if(actionBars != null) {
-            // Restore Actions
+        if(actionBars != null && !PlatformUI.getWorkbench().isClosing()) { // Ensure we're not closing the workbench
             try {
                 for(Entry<String, IAction> entry : savedActions.entrySet()) {
                     actionBars.setGlobalActionHandler(entry.getKey(), entry.getValue());
@@ -116,10 +115,12 @@ public void restoreGlobalActions() {
                 // Update
                 actionBars.updateActionBars();
             }
-            catch(NullPointerException ex) {
+            catch(Exception ex) {
+                ex.printStackTrace();
                 // Catch this because in Archi 4.5 and later (Eclipse 4.11 and later) if we are editing
                 // in a DirectEditManager and close the app we get a NPE in Eclipse
-                // this just stops the NPE written to the log
+                // this just stops the NPE written to the log.
+                // Note we shouldn't get this now as we check PlatformUI.getWorkbench().isClosing()
             }
         }
     }