Schema table mismatches

The Schema module is reporting a mismatch in two areas after upgrading to 6-2.3 Not sure how important these are. One of them I reported elsewhere, was already there in the previous version and has a patch I still need to try (I'm a patch newbie):

twitter
column screen_name:
declared: array('type' => 'varchar', 'length' => 255, 'not null' => TRUE, 'default' => '')
actual: array('type' => 'varchar', 'length' => '255', 'not null' => FALSE)
column screen_name:
declared: array('type' => 'varchar', 'length' => 255, 'not null' => TRUE, 'default' => '')
actual: array('type' => 'varchar', 'length' => '255', 'not null' => FALSE)

twitter_user
column screen_name:
declared: array('type' => 'varchar', 'length' => 255)
actual: array('type' => 'varchar', 'length' => '255', 'not null' => TRUE, 'default' => '')
column screen_name:
declared: array('type' => 'varchar', 'length' => 255)
actual: array('type' => 'varchar', 'length' => '255', 'not null' => TRUE, 'default' => '')
column password: key 'not null' not set, ignoring inspected default value