git: idr.9: Explain the NULL return for idr_find()

[Aaron LI]

commit bd3a3df9e36c446b00b7c904405fd34d18366f3b
Author: Aaron LI <aly at aaronly.me>
Date:   Mon Jan 19 18:04:48 2026 +0800

    idr.9: Explain the NULL return for idr_find()
    
    Referred to Linux documentation:
    https://www.kernel.org/doc/html/v4.20/core-api/idr.html#c.idr_find

Summary of changes:
 share/man/man9/idr.9 | 7 +++++++
 1 file changed, 7 insertions(+)

http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/bd3a3df9e36c446b00b7c904405fd34d18366f3b


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