Fix systems without _POSIX_THREAD_PROCESS_SHARED

git-svn-id: http://svn.fedorahosted.org/svn/corosync/trunk@2390 fd59a12c-fef9-0310-b244-a6a79926bd2f

exec/coroipcs.c

@@ -183,7 +183,7 @@ retry_semop:
 		goto retry_semop;
 	}
 #else
-	sop.sem_num = 1;
+	sop.sem_num = 0;
 	sop.sem_op = 1;
 	sop.sem_flg = 0;