ISTWCMS-5418: Only call logger() when it exists in UwDrushCommands::updatePermissions()

The logger() may not exist if this is called outside of Drush.

src/Commands/UwDrushCommands.php

@@ -105,11 +105,16 @@ class UwDrushCommands extends DrushCommands {
       UwRoles::setUwPermissions($uw_role, $additional);
 
       // Set message for specific role setting permissions.
-      $this->logger()->success('Permissions set for ' . $uw_role['label'] . '.');
+      // The logger() may not exist if this is called outside of Drush.
+      if ($this->logger()) {
+        $this->logger()->success('Permissions set for ' . $uw_role['label'] . '.');
+      }
     }
 
     // Set message for command completed.
-    $this->logger()->success('All permissions set.');
+    if ($this->logger()) {
+      $this->logger()->success('All permissions set.');
+    }
   }
 
   /**