Public bug reported:

IP context is opened twice when receiving an MMS. This slows down
reception of MMS when there are a few pending, and can potentially cause
issues (for instance the second opening might fail).

The sequence is:

1. nuntium opens a context after receiving the SMS push notification
2. it sends an HTTP GET and receives the MMS (m-retrieve.conf)
3. it closes the context
4. it almost immediately tries to open the context again. This takes more time 
than usual because the network is still closing it and it might be the cause 
for some failures when opening a context that have been seen when trying to 
receive an MMS.
5. it sends a m-notifiresp.ind to notify the network that we have received an 
MMS
6. it closes the second context

As we are using immediate mode, we must send m-notifiresp.ind right
after having received the MMS, so it makes no sense to close and re-open
the context.

** Affects: nuntium (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1460012

Title:
  Context is opened twice when receiving an MMS

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