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
........

Merged revisions 415599 from http://svn.asterisk.org/svn/asterisk/branches/11


git-svn-id: http://svn.asterisk.org/svn/asterisk/branches/12@415602 f38db490-d61c-443f-a65b-d21fe96a405b