#313 N96 inbox drafts missing

[vvahakai]

All draft messages are missing when using inbox module on the N96. Calling sms_messages() always returns an empty list, regardless of how many drafts actually exist in the phone draft message folder.

Reproduced as follows:

>>> import inbox
>>> drafts = inbox.Inbox(inbox.EDraft)
>>> drafts.sms_messages()
[]

Tested using pys60 1.4.4 from sourceforge.