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tail -F: fix crash

Description

tail -F: fix crash

When show() detects an error and closes the file and follow() wants to
close it again, a NULL dereference occurs.

PR: 280910
MFC after: 1 week

Details

Provenance
mail_fbsd2.e4m.orgAuthored on Aug 19 2024, 7:54 AM
kibCommitted on Aug 19 2024, 7:54 AM
Parents
rG8132e959099f: libalias: fix subtle racy problem in outside-inside forwarding
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