Ticket #18006: 18006.diff

wp-content/themes/twentyeleven/header.php

@@ -93 +93 @@
                                         // The header image
                                         // Check if this is a post or page, if it has a thumbnail, and if it's a big one
                                         if ( is_singular() && has_post_thumbnail( $post->ID ) &&
-                                                        ( /* $src, $width, $height */ $image = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), array( $header_image_width, $header_image_width ) ) ) &&
+                                                        ( /* $src, $width, $height */ $image = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), 'post-thumbnail' ) ) &&
                                                         $image[1] >= $header_image_width ) :
                                                 // Houston, we have a new header image!
                                                 echo get_the_post_thumbnail( $post->ID, 'post-thumbnail' );