packet: move from strlcpy with unused retval to strscpy

stable inclusion
from stable-v4.19.308
commit a2b855119ec4a0142abf5ce354ea82f368dce778
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I9GV9R
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=a2b855119ec4a0142abf5ce354ea82f368dce778

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[ Upstream commit 8fc9d51e ]

Follow the advice of the below link and prefer 'strscpy' in this
subsystem. Conversion is 1:1 because the return value is not used.
Generated by a coccinelle script.

Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/


Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20220818210227.8611-1-wsa+renesas@sang-engineering.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: a7d6027790ac ("arp: Prevent overflow in arp_req_get().")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Dong Chenchen <dongchenchen2@huawei.com>