Description: netfilter: nft_limit: avoid possible divide error in nft_limit_init
References:
Notes:
 carnil> Introduced in c26844eda9d4 ("netfilter: nf_tables: Fix nft limit burst
 carnil> handling")
 carnil> 3e0f64b7dd31 ("netfilter: nft_limit: fix packet ratelimiting"). Vulnerable
 carnil> versions: 4.13 4.14.54 4.17.
Bugs:
upstream: released (5.12-rc8) [b895bdf5d643b6feb7c60856326dd4feb6981560]
6.7-upstream-stable: N/A "Fixed before branching point"
6.6-upstream-stable: N/A "Fixed before branching point"
6.1-upstream-stable: N/A "Fixed before branching point"
5.10-upstream-stable: released (5.10.32) [dc1732baa9da5b68621586bf8636ebbc27dc62d2]
4.19-upstream-stable: released (4.19.189) [fadd3c4afdf3d4c21f4d138502f8b76334987e26]
sid: released (5.10.38-1)
6.1-bookworm-security: N/A "Fixed before branching point"
5.10-bullseye-security: N/A "Fixed before branching point"
4.19-buster-security: released (4.19.194-1)