Bug#16860588:CRASH WITH CREATE TABLE ... LIKE ..

AND PARTITION VALUES IN (NULL)

The code assumed there was at least one list element
in LIST partitioned table.

Fixed by checking the number of list elements.

sql/partition_info.cc

@@ -2214,11 +2214,10 @@ int partition_info::fix_parser_data(THD *thd)
   {
     part_elem= it++;
     List_iterator<part_elem_value> list_val_it(part_elem->list_val_list);
-    j= 0;
     num_elements= part_elem->list_val_list.elements;
     DBUG_ASSERT(part_type == RANGE_PARTITION ?
                 num_elements == 1U : TRUE);
-    do
+    for (j= 0; j < num_elements; j++)
     {
       part_elem_value *val= list_val_it++;
       if (column_list)
@@ -2253,7 +2252,7 @@ int partition_info::fix_parser_data(THD *thd)
           list_val_it.remove();
         }
       }
-    } while (++j < num_elements);
+    }
   } while (++i < num_parts);
   DBUG_RETURN(FALSE);
 }