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
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Merged revisions 414152 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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Merged revisions 414153 from http://svn.asterisk.org/svn/asterisk/branches/11


git-svn-id: http://svn.asterisk.org/svn/asterisk/branches/12@414154 f38db490-d61c-443f-a65b-d21fe96a405b