[flashrom-gerrit] Change in flashrom[master]: serprog.c: Avoid calling memcpy with NULL pointer arguments

[Felix Singer (Code Review)]

Attention is currently required from: Paul Menzel, Angel Pons, Light.
Felix Singer has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/62726 )

Change subject: serprog.c: Avoid calling memcpy with NULL pointer arguments
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Patch Set 12:

(2 comments)

Commit Message:

https://review.coreboot.org/c/flashrom/+/62726/comment/14d5ad69_38e0d4eb 
PS12, Line 11: Still, add a NULL check before calling memcpy to be safe.
Wrap at 72 chars.

https://review.coreboot.org/c/flashrom/+/62726/comment/908cb2a1_dee3bc22 
PS12, Line 10: Although, since parmlen is also 0 at that time I
             : don't think it would make much difference.
The function `sp_stream_buffer_op` is used multiple times and also with different values for parmlen.