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

[Edward O'Callaghan (Code Review)]

Hello build bot (Jenkins),

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/flashrom/+/50246

to look at the new patch set (#2).

Change subject: programmer.h: Convert anon union to anon struct
......................................................................

programmer.h: Convert anon union to anon struct

Convert the anon union of registered masters in the mst
field of the flashctx to a anon struct. If we are going
to dereference a pointer there in an undefined way we
should crash and not plow ahead with invalid memory.

i.e., As a minimal example,
```

struct idk {
    struct {
    	int *a;
    	int *b;
    };
};

int main()
{
    struct idk foo = {0};
    int i = 12;
    foo.a = &i;
    printf("%d\n", *foo.b);
    return 0;
}
```

The user of the registered_masters type is therefore
responsible for querying the buses_supported field before
attempting to dereference a ptr field in the anon struct.

BUG=?
TEST=<needed>

Change-Id: I576967a8599b923c902e39f177f39146291cc242
Signed-off-by: Edward O'Callaghan 
---
M programmer.h
1 file changed, 1 insertion(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/flashrom refs/changes/46/50246/2