Ticket #3588: 3588b.diff

wp-admin/admin-functions.php

@@ -2079 +2079 @@
 
                 $max = apply_filters( 'wp_thumbnail_creation_size_limit', 3 * 1024 * 1024, $attachment_id, $file );
 
-                if ( $max > 0 && $metadata['width'] * $metadata['height'] < $max ) {
+                if ( $max < 0 || $metadata['width'] * $metadata['height'] < $max ) {
                         $max_side = apply_filters( 'wp_thumbnail_max_side_length', 128, $attachment_id, $file );
                         $thumb = wp_create_thumbnail( $file, $max_side );