Ticket #29766: 29766.patch

src/wp-admin/includes/class-wp-comments-list-table.php

@@ -525 +525 @@
                                 comment_author_email_link();
                                 echo '<br />';
                         }
-                        echo '<a href="edit-comments.php?s=';
-                        comment_author_IP();
-                        echo '&amp;mode=detail';
-                        if ( 'spam' == $comment_status )
-                                echo '&amp;comment_status=spam';
-                        echo '">';
-                        comment_author_IP();
-                        echo '</a>';
+                        $comment_author_IP = get_comment_author_IP();
+                        if ( ! empty( $comment_author_IP ) ) {
+                                echo '<a href="edit-comments.php?s=' . $comment_author_IP . '&amp;mode=detail';
+                                if ( 'spam' == $comment_status ) {
+                                        echo '&amp;comment_status=spam';
+                                }
+                                echo '">' . $comment_author_IP . '</a>';
+                        }
                 }
         }