FreeSWITCH-FS-6836

Merge pull request #1006 in FS/freeswitch from ~PIOTRGREGOR/freeswitch:bugfix/FS-9627-number-of-threads-taken-from-global to master

* commit '3734043aaa7f5413fe16fbafb6e9d6db08475f20':
  FS-9627 [avmd]: #fix dynamic initialization of session