[search] Fix method call on null value

Seeing these pop up in the production logs. This can be null under
certain circumstances, so expect and handle it.

Change-Id: I25a355174e0ad93280eccffd4ec711a641d14bf3

diff --git a/includes/specials/SpecialSearch.php b/includes/specials/SpecialSearch.php
index d6ce6a4..fd24521 100644 (file)
--- a/includes/specials/SpecialSearch.php
+++ b/includes/specials/SpecialSearch.php
@@ -387,7 +387,8 @@ class SpecialSearch extends SpecialPage {
                        $textMatches->free();
                }
 
-               $hasOtherResults = $textMatches->hasInterwikiResults( SearchResultSet::INLINE_RESULTS );
+               $hasOtherResults = $textMatches &&
+                       $textMatches->hasInterwikiResults( SearchResultSet::INLINE_RESULTS );
 
                if ( $num === 0 ) {
                        if ( $textStatus ) {