chan_ooh323: fix h323_log full path name

* fix to use astlogdir option for h323_log file instead of hardcoded

ASTERISK-23754 #close

Reported by: Igor Goncharovsky
Patches:
	ooh323_logger_patch.diff
........

Merged revisions 414152 from http://svn.asterisk.org/svn/asterisk/branches/1.8


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/11@414153 65c4cc65-6c06-0410-ace0-fbb531ad65f3