openarc: Ignore unknown method in the result of parsing AR header

Since we discard resinfo of which method is not known in AR header
parsing now, it should never happen. However we check it as a foolproof.

* openarc/openarc.c (mlfi_eom):
   Ignore unknown method in the result of parsing AR header, and
   log it.

Author: futatuki

openarc/openarc.c

@@ -3660,6 +3660,17 @@ mlfi_eom(SMFICTX *ctx)
 
 				for (n = 0; n < ar.ares_count; n++)
 				{
+					if (ar.ares_result[n].result_method == ARES_METHOD_UNKNOWN)
+					{
+						/* foolproof: should not happen */
+						if (conf->conf_dolog)
+						{
+								syslog(LOG_DEBUG,
+								       "%s: internal error: unknown method is found in ares_result, ignored",
+								       afc->mctx_jobid);
+						}
+						continue;
+					}
 					if (ar.ares_result[n].result_method == ARES_METHOD_ARC)
 					{
 						/*