Page up in the scrollbarless message view crashes Adium

[piotrekm]

When a theme which disables scrollbars (like Pretty Simple,  http://adiumxtras.com/index.php?a=xtras&xtra_id=6938) is set, pressing page up causes Adium to crash. I attach the crash report generated by the OS.

[piotrekm]

Mac OS X - generated crash log

[wbowling]

Easily reproducible using the provided steps with either Page Up or Page Down.

Seems to get stuck in a loop where keyDown event is continually forwarded to the next responder (which doesn't change) until it crashes with a malloc error.

I found a way that seems to fix problem, but maybe it's too simple and doesn't solve everything :)

 http://bitbucket.org/wbowling/adium/changeset/4e98e1f66bcb/

[Zachary West <zacw@…>]

(In  6fa58273701e) Prevent infinitely forwarding navigation events. Fixes #13251.

[Zachary West <zacw@…>]

(In  ecda51fe4614) Prevent infinitely forwarding navigation events. Fixes #13251.