Ensure we don't assert with debug binaries if SHOW INNODB STATUS returns with an error.

sql/handler.cc:
  SHOW INNODB STATUS sometimes returns 0 even if it has generated an error.
  This code is here to catch it until InnoDB some day is fixed.
storage/innobase/handler/ha_innodb.cc:
  Catch at least one of the possible errors from SHOW INNODB STATUS to provide a correct return code.
storage/xtradb/handler/ha_innodb.cc:
  Catch at least one of the possible errors from SHOW INNODB STATUS to provide a correct return code.
support-files/my-huge.cnf.sh:
  Fixed typo

1 files changed, 6 insertions, 2 deletions

diff --git a/sql/handler.cc b/sql/handler.cc
index b5c9716bbbf..9ded738055e 100644
--- a/sql/handler.cc
+++ b/sql/handler.cc
@@ -4800,10 +4800,14 @@ bool ha_show_status(THD *thd, handlerton *db_type, enum ha_stat_type stat)
               db_type->show_status(db_type, thd, stat_print, stat) ? 1 : 0;
   }
 
-  if (!result)
+  /*
+    We also check thd->is_error() as Innodb may return 0 even if
+    there was an error.
+  */
+  if (!result && !thd->is_error())
     my_eof(thd);
   else if (!thd->is_error())
-    my_error(ER_GET_ERRNO, MYF(0), 0);
+    my_error(ER_GET_ERRNO, MYF(0), errno);
   return result;
 }