Check sccp_device_selectedchannels_count calling functions

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5418 43c1dc8c-776e-4df2-8ef1-6e829299be21
Use of AUTO_RELEASE in sccp_channel

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5419 43c1dc8c-776e-4df2-8ef1-6e829299be21