Return error message instead of fatal abort

diff --git a/includes/Linker.php b/includes/Linker.php
index f7c1959..d9cd2b6 100644 (file)
--- a/includes/Linker.php
+++ b/includes/Linker.php
@@ -500,6 +500,9 @@ class Linker {
                                $boxheight = -1;
                        if ( '' == $manual_thumb ) {
                                $thumb = $img->getThumbnail( $boxwidth, $boxheight );
+                               if ( is_null( $thumb ) ) {
+                                       return '<b>FATAL ERROR: Thumb object NULL in Linker.php:504</b>';
+                               }
                                $thumbUrl = $thumb->getUrl();
                                $boxwidth = $thumb->width;
                                $boxheight = $thumb->height;