[O] [Bug] Hanging multiple TAG lines in setup file

[Kyle Meyer]

Hello,

I'm experiencing a second issue that seems to be introduced by commit
61a241f ('Rewrite setup keywords initialization'). Starting Emacs (24.4)
with 'emacs -Q' and with no additional setup besides loading Org, I see
the following behavior.

Opening test-good.org works as usual.

,---- setup-good.org
| #+TAGS: tag1 tag2
| #+TAGS: tag3 tag4
`----
,---- test-good.org
| #+setupfile: setup-good.org
|
| * heading 1
`----

Opening test-bad.org hangs indefinitely.

,---- setup-bad.org
| #+TAGS: tag1 tag2
| #+TAGS: tag3 tag4
| #+TAGS: tag5 tag6
`----
,---- test-bad.org
| #+setupfile: setup-bad.org
|
| * heading 1
`----

--
Kyle