[Coverity CID: 219568] Out-of-bounds read in /zephyr/include/generated/syscalls/net_if.h (Generated Code)

[zephyrbot]

Static code scan issues found in file:

https://github.com/zephyrproject-rtos/zephyr/tree/374629af906a24add294b1c3b945128cb6a486e8//zephyr/include/generated/syscalls/net_if.h

Category: Memory - illegal accesses
Function: net_if_ipv6_addr_add_by_index
Component: Networking
CID: 219568

Details:

Please fix or provide comments in coverity using the link:

https://scan9.coverity.com/reports.htm#v29271/p12996.

Note: This issue was created automatically. Priority was set based on classification
of the file affected and the impact field in coverity. Assignees were set using the CODEOWNERS file.

[nashif]

see #35633