[F] four typos in private.php

[WDZ]

• $reply_data should be $reply_date
• $lang->yesturday should be $lang->yesterday
• $nmybb should be $mybb
• $per_page should be $perpage

[DCR]

Dude, good job in finding bugs

[pepotiger]

@WDZ am sure I'll see u at the top of beta testers list whene there any need for new beta testing..
thats if you didn't became one of the supporter team

[Sergio Montoya]

Nice... you might have another fan club

[Sergio Montoya]

Thank you for your bug report.

This bug has been fixed in our internal code repository. Please note that the problem will not be fixed here until these forums are updated.

[Chasingu]

lol there is probably a lot of typos cause they wanted to get mybb 1.4 out the door