restore asset url check

in the restore init process, there is a space that restores assets from
a previous install but grabbing them directly from the site and saving
them to the install.

a check was added so this script only runs if that url has been set in
the init restore form

app/Services/Upkeep/InitService.php

@@ -135,7 +135,9 @@ class InitService
             if ($found) {
                 if (password_verify($request->restore_member_pass, $found['password'])) {
                     //restore assets from previous site
+                    if ($request->restore_former_url != '' || $request->restore_former_url != null) {
                         $this->moveAssets($zip, $request->restore_former_url);
+                    }
                     $newFolks = [];
                     if (!isset($found['secret'])) {
                         $found['secret'] = self::validSecret(12);