[Merge] lp:~phablet-team/media-hub/fix-1579953 into lp:media-hub

[Jim Hodapp]

Jim Hodapp has proposed merging lp:~phablet-team/media-hub/fix-1579953 into lp:media-hub.

Commit message:
Make sure that is_current_player() doesn't crash when there isn't a current player pointer set.

Requested reviews:
  Ubuntu Phablet Team (phablet-team)
Related bugs:
  Bug #1579953 in media-hub (Ubuntu): "/usr/bin/media-hub-server:11:core::ubuntu::media::ServiceSkeleton::Private::Exported::is_current_player:core::ubuntu::media::ServiceSkeleton::is_current_player:core::ubuntu::media::PlayerImplementation:core::Signal:core::Signal"
  https://bugs.launchpad.net/ubuntu/+source/media-hub/+bug/1579953

For more details, see:
https://code.launchpad.net/~phablet-team/media-hub/fix-1579953/+merge/294945

Make sure that is_current_player() doesn't crash when there isn't a current player pointer set.
-- 
Your team Ubuntu Phablet Team is requested to review the proposed merge of lp:~phablet-team/media-hub/fix-1579953 into lp:media-hub.
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