[S] Change in flashrom[master]: layout: Check return values for strdup in register_include_arg

[Edward O'Callaghan (Code Review)]

Attention is currently required from: David Hendricks, Angel Pons, Anastasia Klimchuk.

Edward O'Callaghan has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/70006 )

Change subject: layout: Check return values for strdup in register_include_arg
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Patch Set 6: Code-Review+2

(1 comment)

Commit Message:

https://review.coreboot.org/c/flashrom/+/70006/comment/4113b576_f953261f 
PS5, Line 9: strdup return values should be checked for NULL to catch the
           : potential error case of out of memory.
> First of all, good point about what the patch is doing: indeed, so I updated commit message. […]

It looks much better. I still would strongly suggest the separate function to complete the work here, which is only a minor step upon this however this patch is more inline with my suggestions.