INNODB_BUFFER_POOL_PAGES_BLOB stores incorrect NEXT_PAGE_NO

[Laurynas Biveinis]

The code in i_s_innodb_buffer_pool_pages_blob_fill() reads:

next_page_no = ... read read read ... ;
...
table->field[1]->store(block->page.offset);
...
if(next_page_no == FIL_NULL)
{
  table->field[4]->store(0);
} else {
  table->field[4]->store(block->page.offset); <- oops!
}

Also, the tests for this table are terribly inadequate (percona_skip_innodb_i_s.test)

[Shahriyar Rzayev (rzayev-sehriyar)]

Percona now uses JIRA for bug reports so this bug report is migrated to: https://jira.percona.com/browse/PS-2805