Allow speeddial use after starting entering digits (Reported by Jeffrey)

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5196 43c1dc8c-776e-4df2-8ef1-6e829299be21
First version of a fix to correct longstanding hangup issue (ending in segfault in ast_timer_enable_continuous)

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5197 43c1dc8c-776e-4df2-8ef1-6e829299be21
When running sccp_socket_cleanup_timed_out, set thread to null, to be able to run destroy on the next run

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5198 43c1dc8c-776e-4df2-8ef1-6e829299be21
Moved sccp_find_channel_by_lineInstance_and_callid outside of DEBUG block

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5199 43c1dc8c-776e-4df2-8ef1-6e829299be21