Reinclude sys/stat.h in chan_dahdi.c and remove redundant include in utils.c

git-svn-id: http://svn.asterisk.org/svn/asterisk/trunk@395182 f38db490-d61c-443f-a65b-d21fe96a405b
Drop the reference count on the correct object.


git-svn-id: http://svn.asterisk.org/svn/asterisk/trunk@395183 f38db490-d61c-443f-a65b-d21fe96a405b