FreeSWITCH2

Merge pull request #1797 in FS/freeswitch from bugfix/FS-11981-freeswitch-crash-any-time-in-switch_timer.c-when-high-throughput to master

* commit '48b8fa5864548322944bdcdad0671ffbdc32cffb':
  FS-11981: [Core] Fix FreeSWITCH crash when timerfd is initialized with an error.