chan_ooh323: fix loading module failure if there no accessible h323_log or ooh323 config file

change return 1 to return AST_MODULE_LOAD_FAILURE on module load routine
few cosmetic changes

ASTERISK-23814 #close

(closes issue ASTERISK-23814)

Reported by: Igor Goncharovsky
Patches:
	ASTERISK-23814-ast11.patch
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Merged revisions 415599 from http://svn.asterisk.org/svn/asterisk/branches/11
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Merged revisions 415602 from http://svn.asterisk.org/svn/asterisk/branches/12


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@415630 65c4cc65-6c06-0410-ace0-fbb531ad65f3