Bug: 14838 Fix errors on initial quick search breaking subsequent sea…

…rches.

If the error occurs on the first search, the search buffer is never
setup correctly, despite the fact we are still viewing the search
results.  Include the 'search' parameter in the viewport metadata
returned by the error object to indicate it's a search request.

lib/Ajax/Application/Viewport/Error.php

@@ -51,7 +51,7 @@ public function toObject()
         $ob->error = true;
         $ob->label = $this->_mbox->label;
         $ob->view = $this->_mbox->form_to;
-
+        $ob->metadata->search = strpos((string)$this->_mbox, IMP_Search::MBOX_PREFIX) === 0;
         return $ob;
     }