Fix dtmf when running in earlyrtp immediate mode. Fixes: offhook dialing using dtmf overlap, including redial, enbloc, manual entry. (Tested by Pavel)

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5558 43c1dc8c-776e-4df2-8ef1-6e829299be21
Fix Compile Bug: compile warning when compiling against asterisk-1.6 (Reported by Hhornung bug #235)

git-svn-id: https://svn.code.sf.net/p/chan-sccp-b/code/trunk@5559 43c1dc8c-776e-4df2-8ef1-6e829299be21