missing_wait: add short comment about P_PIDFD

This commit is contained in:
Yu Watanabe
2025-03-01 05:13:32 +09:00
parent 003b845cb2
commit b9b006c504

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@@ -5,6 +5,7 @@
#include "macro.h"
/* since glibc-2.36 */
#ifndef P_PIDFD
# define P_PIDFD 3
#else