Merge lp:~laurynas-biveinis/percona-server/bug1388001 into lp:percona-server/5.6

[Laurynas Biveinis]

Fix bug 1388001 / https://tokutek.atlassian.net/browse/DB-650
(Incorrect error handling for prepare_index_scan failure in
join_read_first) by applying the patch at
https://github.com/Tokutek/percona-server-5.6/commit/5f3f1e29692304a73dc91de70e366dc876d84c20
which calls report_handler_error in join_read_first in the case of
prepare_index_scan failure.

http://jenkins.percona.com/job/percona-server-5.6-param/748/

[Laurynas Biveinis (laurynas-biveinis)]

review: Approve

=== modified file 'sql/sql_executor.cc'
--- sql/sql_executor.cc	2014-08-22 10:02:24 +0000
+++ sql/sql_executor.cc	2014-10-31 13:59:11 +0000
@@ -2533,7 +2533,10 @@
     return 1;
   }
   if ((error= tab->table->file->prepare_index_scan()))
+  {
+    report_handler_error(table, error);
     return 1;
+  }
   if ((error= tab->table->file->ha_index_first(tab->table->record[0])))
   {
     if (error != HA_ERR_KEY_NOT_FOUND && error != HA_ERR_END_OF_FILE)