Change in flashrom[master]: flashrom.c, sfdp.c: Initialize dynamically allocated memory using calloc

[Light (Code Review)]

Attention is currently required from: Felix Singer, Light, Anastasia Klimchuk.
Hello build bot (Jenkins), Nico Huber, Anastasia Klimchuk,

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

https://review.coreboot.org/c/flashrom/+/62747

to look at the new patch set (#14).

Change subject: flashrom.c, sfdp.c: Initialize dynamically allocated memory using calloc
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flashrom.c, sfdp.c: Initialize dynamically allocated memory using calloc

In flashrom_image_write variables curcontents and oldcontents are
dynamically allocated using malloc. These could remain uninitialized and
when later used in need_erase could result in undefined behaviour.
Similar reasoning for variables hbuf, hdrs, tbuf in function
prob_spi_sfdp.

So allocate them using calloc to initialize them to zeroes. Also, copy
"FLASHROM BUG!" to detect future bugs.

Change-Id: I6b9269129968fb3b55b0d2a2e384c8a1aeba43ab
Signed-off-by: Aarya Chaumal 
---
M flashrom.c
M sfdp.c
2 files changed, 9 insertions(+), 4 deletions(-)

git pull ssh://review.coreboot.org:29418/flashrom refs/changes/47/62747/14