Fix debug statement in sccp_socket.c: sccp_process_data

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4599 43c1dc8c-776e-4df2-8ef1-6e829299be21
Fix transfer with local_channel->state = PROGRESS (Provided by Niklas Larsson)

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4600 43c1dc8c-776e-4df2-8ef1-6e829299be21
Fix compile warning about device being used uninitalized (Reported by Holger Hornung)

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@4601 43c1dc8c-776e-4df2-8ef1-6e829299be21