[buddypress-trac] [BuddyPress][8622] trunk/src/bp-members/bp-members-functions.php: Add default values to `bp_core_get_userid_from_nicename() ` and `bp_core_get_userid() ` so any usages without passed parameters do not cause debug notices (that 's why those `empty()` checks are there, obvs.)

[buddypress-trac at lists.automattic.com]

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