Alexander's patch: https://github.com/fairwaves/openbts-2.8/commit/3b05a4929cd1ff1175b36af971199c408d50ba53

git-svn-id: http://wush.net/svn/range/software/public@4913 19bc5d8c-e614-43d4-8b26-e1612bc8e597
Merging another fix from Private. This one didn't count sip state fail as finished, leading to extra 480s

git-svn-id: http://wush.net/svn/range/software/public@4914 19bc5d8c-e614-43d4-8b26-e1612bc8e597