place lookup: filter places that have no details

In rare cases search_name might have entries for places for
which we do not return details, in particular for linkees.
Need to remove those entries in the result list before returning
the details.

Fixes #1932.

lib/PlaceLookup.php

@@ -456,6 +456,13 @@ class PlaceLookup
             $aResults[$aPlace['place_id']] = $aPlace;
         }
 
+        $aResults = array_filter(
+            $aResults,
+            function ($v) {
+                return !($v instanceof Result);
+            }
+        );
+
         Debug::printVar('Places', $aResults);
 
         return $aResults;