[imp] thismailbox fix for RELENG_3

[Jan Schneider]

Zitat von Brian Keifer <brian at valinor.net>:

> This can probably count as an MFH entry.  It's a patch against RELENG_3's
> imp/lib/IMP.php that makes sure thismailbox gets initialized, even for
> POP
> sessions.  Thanks to Chuck for the original patch against HEAD.

Committed, thanks.

Jan.

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