Missing header(...) in produces wrong encoding in Tags-Quicklinks

[UnderWordPressure]

German "Umlaute" in the DashBoard Tags-Quicklinks quirks on some Linux Webservers.
This at least concerns the tag quicklinks, all other german "Umlaute" are okay.

Solution:
Add the "header()" line in "wp-admin/admin-ajax.php"

header('Content-Type:text/html; charset='.get_option('blog_charset'));

Screenshots availabe for explanation.
​http://landfrauen-gifhorn.de/ablage/wp2.7-tags-quicklinks-bad.jpg
​http://landfrauen-gifhorn.de/ablage/wp2.7-tags-quicklinks-good.jpg

[UnderWordPressure]

Patch in wp-admin/admin-ajax.php

[UnderWordPressure]

Scrambled encoding in tag quicklinks

[UnderWordPressure]

Tag quicklinks ok

[UnderWordPressure]

In this file occures the same problem, header line is added by me.

[azaozz]

(In [10375]) Add Content-Type header to admin-ajax and press this, props UnderWordPressure, fixes #8795