Improve short circuit

Change-Id: I2c66f20d57dc48c9083602f9bd066971552e5682
diff --git a/lib/Kalamar/Controller/Search.pm b/lib/Kalamar/Controller/Search.pm
index 74143c1..6938bd6 100644
--- a/lib/Kalamar/Controller/Search.pm
+++ b/lib/Kalamar/Controller/Search.pm
@@ -77,6 +77,7 @@
     # Corpus query exists
     $query{q} = $query_placeholder;
     $query{count} = 0;
+    $query{cutoff}  = 'true';
   }
 
   else {