Patrick Steinhardt b3e098d6e7 refs/files: fix NULL pointer deref when releasing ref store ...

The `free_ref_cache()` function is not `NULL` safe and will thus
segfault when being passed such a pointer. This can easily happen when
trying to release a partially initialized "files" ref store. Fix this.

Signed-off-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

2024-06-06 09:04:32 -07:00

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