audiohooks: Clean references to formats

Cleanup references to in_translate[x].format and
out_translate[x].format in ast_audiohook_detach_list.

ASTERISK-24465 #close
Reported by: Corey Farrell
Review: https://reviewboard.asterisk.org/r/4124/


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/13@426803 65c4cc65-6c06-0410-ace0-fbb531ad65f3

main/audiohook.c

@@ -558,9 +558,11 @@ void ast_audiohook_detach_list(struct ast_audiohook_list *audiohook_list)
 	for (i = 0; i < 2; i++) {
 		if (audiohook_list->in_translate[i].trans_pvt) {
 			ast_translator_free_path(audiohook_list->in_translate[i].trans_pvt);
+			ao2_cleanup(audiohook_list->in_translate[i].format);
 		}
 		if (audiohook_list->out_translate[i].trans_pvt) {
 			ast_translator_free_path(audiohook_list->out_translate[i].trans_pvt);
+			ao2_cleanup(audiohook_list->in_translate[i].format);
 		}
 	}