chrt: fix HAVE_SCHED_SETATTR fallback case

Broken since 6f27e449. We could not enter the fallback
if HAVE_SCHED_SETATTR is not defined.

Two gcc warnings made this issue visible:
  schedutils/chrt.c:247:1: warning: label 'fallback' defined but not used [-Wunused-label]
  schedutils/chrt.c:266:9: warning: 'policy' may be used uninitialized in this function [-Wuninitialized]

Signed-off-by: Ruediger Meier <ruediger.meier@ga-group.nl>

schedutils/chrt.c

@@ -239,13 +239,14 @@ static void show_sched_pid_info(struct chrt_ctl *ctl, pid_t pid)
 		runtime = sa.sched_runtime;
 		period = sa.sched_period;
 	}
-#endif
 
 	/*
 	 * Old way
 	 */
 fallback:
-	if (errno == ENOSYS) {
+	if (errno == ENOSYS)
+#endif
+	{
 		struct sched_param sp;
 
 		policy = sched_getscheduler(pid);