D28535: [KIO-MTP] Fix null pointer dereference

[Alexander Saoutkin]

feverfew created this revision.
feverfew added reviewers: akrutzler, dfaure, elvisangelaccio.
Herald added projects: Dolphin, Frameworks.
Herald added subscribers: kfm-devel, kde-frameworks-devel.
feverfew requested review of this revision.

REVISION SUMMARY
  A null pointer can be returned from getDevice() if a device is disconnected.
  Passing NULL into LIBMTP_Get_Storage() results in a NULL pointer dereference.
  
  BUG: 405838

TEST PLAN
  Compiles. I couldn't reproduce this as described in the bug report, but from
  reading the attached stacktrace in the bug report it's obvious what went wrong
  here.

REPOSITORY
  R320 KIO Extras

BRANCH
  fixNullPtr (branched from master)

REVISION DETAIL
  https://phabricator.kde.org/D28535

AFFECTED FILES
  mtp/kiod_module/mtpstorage.cpp

To: feverfew, akrutzler, dfaure, elvisangelaccio
Cc: kde-frameworks-devel, fvogt, kfm-devel, ngraham, nikolaik, pberestov, iasensio, fprice, LeGast00n, cblack, fbampaloukas, alexde, GB_2, Codezela, feverfew, meven, michaelh, spoorun, navarromorales, firef, andrebarros, bruns, emmanuelp, mikesomov
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