Set default for nickname preference

Not having a default results in 1361430 pointless rows with
empty up_value in user_properties on enwiki only.

Part of work on bug 52777.

Change-Id: I63db3a813fbf11fd3d9a0f0535facc39d975c563

diff --git a/includes/DefaultSettings.php b/includes/DefaultSettings.php
index e647d17..a74f4ad 100644 (file)
--- a/includes/DefaultSettings.php
+++ b/includes/DefaultSettings.php
@@ -4012,6 +4012,7 @@ $wgDefaultUserOptions = array(
        'math' => 1,
        'minordefault' => 0,
        'newpageshidepatrolled' => 0,
+       'nickname' => '',
        'noconvertlink' => 0,
        'norollbackdiff' => 0,
        'numberheadings' => 0,