Allow softkey reject while device onhook.

Fixes up softkey endcall. Previous code was a copy of onhook, now
allows for endcall softkey to be used while device is still onhook.



git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@353224 65c4cc65-6c06-0410-ace0-fbb531ad65f3