Prevent resource leaks by closing message after use.
Prevent resource leaks by closing message after use.

MessageOutputStream needs to be closed after use. With that, the
appropriate IOExceptions need to be accounted for.

jcnoir/dmix,philchand/mpdroid-2014,abarisain/dmix,0359xiaodong/dmix,hurzl/dmix,philchand/mpdroid-2014,0359xiaodong/dmix,hurzl/dmix,joansmith/dmix,philchand/mpdroid-2014,jcnoir/dmix,abarisain/dmix,joansmith/dmix,philchand/mpdroid-2014