Fix for 1047335: SchemaIterator fails when it encounters a crashed table

t/lib/samples/bug_1047335_crashed_table.sql

@@ -0,0 +1,11 @@
+DROP DATABASE IF EXISTS bug_1047335;
+CREATE DATABASE bug_1047335;
+USE bug_1047335;
+CREATE TABLE bug_1047335.crashed_table (
+   `id` int(10) unsigned NOT NULL auto_increment,
+   `trx_id` int(10) unsigned default NULL,
+   `etc` text,
+   PRIMARY KEY (`id`),
+   KEY `idx1` (`trx_id`),
+   KEY `idx2` (`trx_id`, `etc`(128))
+) ENGINE=MyISAM;