Special:PageLanguage: Show log extract only when title known

When open Special:PageLanguage without a page, the whole pagelang log is
shown and the notice:
Title::newFromText: $text must be a string. This will throw an
InvalidArgumentException in future. [Called from LogPager::limitTitle]
The whole log is useless at this position, so showing it only when
looking at a specific page.

Change-Id: I2a0b7ccc71789506554617e1d12797e72835a12a

diff --git a/includes/specials/SpecialPageLanguage.php b/includes/specials/SpecialPageLanguage.php
index 79b2444..9476819 100644 (file)
--- a/includes/specials/SpecialPageLanguage.php
+++ b/includes/specials/SpecialPageLanguage.php
@@ -87,7 +87,10 @@ class SpecialPageLanguage extends FormSpecialPage {
        }
 
        protected function postText() {
-               return $this->showLogFragment( $this->par );
+               if ( $this->par ) {
+                       return $this->showLogFragment( $this->par );
+               }
+               return '';
        }
 
        protected function getDisplayFormat() {