Change in flashrom[master]: programmer.h: Convert anon union to anon struct

[Angel Pons (Code Review)]

Attention is currently required from: Stefan Reinauer, Edward O'Callaghan.
Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/50246 )

Change subject: programmer.h: Convert anon union to anon struct
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Patch Set 2: Code-Review+1

(1 comment)

Commit Message:

https://review.coreboot.org/c/flashrom/+/50246/comment/02fc5f79_4efbf4cf 
PS2, Line 29: printf("%d\n", *foo.b);
In C, dereferencing a null pointer is undefined behavior. I'm not sure what the purpose of this code snippet is. If it's to show the problems of non-null but invalid pointers, I'd use pointers to functions with different signatures.

Still, I believe this change is a good idea: it's better to have null pointers than non-null but invalid pointers.