Suppressed errors during install

[SergeyBiryukov]

Reported in ​http://wordpress.org/support/topic/36-beta3-24284-throws-a-stream-of-suppressed-errors-during-install:

PHP Strict standards:  Redefining already defined constructor for class WP_Widget in .../wp-includes/widgets.php on line 93
PHP Notice:  unserialize(): Error at offset 0 of 38 bytes in .../wp-admin/includes/upgrade.php on line 1420
PHP Strict standards:  Only variables should be assigned by reference in .../wp-admin/includes/schema.php on line 589
PHP Strict standards:  Only variables should be assigned by reference in .../wp-admin/includes/schema.php on line 622
PHP Strict standards:  Only variables should be assigned by reference in .../wp-admin/includes/schema.php on line 644
PHP Strict standards:  Only variables should be assigned by reference in .../wp-admin/includes/schema.php on line 655
PHP Strict standards:  Only variables should be assigned by reference in .../wp-admin/includes/schema.php on line 662
PHP Strict standards:  Only variables should be assigned by reference in .../wp-admin/includes/schema.php on line 675
PHP Strict standards:  Only variables should be assigned by reference in .../wp-admin/includes/schema.php on line 675
PHP Strict standards:  Only variables should be assigned by reference in .../wp-admin/includes/schema.php on line 696
PHP Strict standards:  Only variables should be assigned by reference in .../wp-admin/includes/schema.php on line 702
PHP Strict standards:  Only variables should be assigned by reference in .../wp-admin/includes/schema.php on line 708
PHP Strict standards:  Only variables should be assigned by reference in .../wp-admin/includes/schema.php on line 720
PHP Strict standards:  Only variables should be assigned by reference in .../wp-admin/includes/schema.php on line 733
PHP Strict standards:  Only variables should be assigned by reference in .../wp-admin/includes/schema.php on line 746
PHP Strict standards:  Only variables should be assigned by reference in .../wp-admin/includes/schema.php on line 760
PHP Strict standards:  Only variables should be assigned by reference in .../wp-admin/includes/schema.php on line 774
PHP Strict standards:  Only variables should be assigned by reference in .../wp-admin/includes/schema.php on line 787

[SergeyBiryukov]

See #20801 for WP_Widget constructor.

[SergeyBiryukov]

#24438 has a patch for the strict notices.

Let's try to fix the unserialize() notice here.

[leewillis77]

Possible patch

[leewillis77]

Looks like we can just use maybe_unserialize() here instead of unserialize. We can probably drop the @ as well?

[leewillis77]

Revised patch

[nacin]

In 24625:

Use maybe_unserialize() in upgrade.php's private get_option() function. This actually predates maybe_unserialize() ([2487], [3234]). props leewillis77. fixes #24365.