Change in flashrom[master]: tests: assert pathname and flags when calling open()

[Edward O'Callaghan (Code Review)]

Attention is currently required from: Sam McNally, Daniel Campello.
Edward O'Callaghan has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/63227 )

Change subject: tests: assert pathname and flags when calling open()
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Patch Set 6:

(1 comment)

File tests/tests.c:

https://review.coreboot.org/c/flashrom/+/63227/comment/fbfe1433_ae7a5435 
PS6, Line 77: wrap_open_and_friends
> open_state in not used when open != NULL (this function returns from within this if case)

That is what I mean by "unexpected behavior" as `open_state` being non-NULL implies a builtin version of `open()` while `open` being non-NULL implies to use an explicit `open()` implementation.

This function maybe needs a comment.