odp-util: Fix tunnel key attribute length checks. #3297

Job	Run time
build oss-fuzz fuzzers	2m 40s
libreswan (ubuntu-24.04)	10s
linux deb no dpdk	5m 28s
osx clang --disable-ssl	1m 46s
dpdk gcc (ubuntu-24.04)	9s
linux rpm fedora	3m 59s
clang-analyze-cache	11m 7s
linux clang c99	2m 43s
linux gcc test --enable-shared	11m 38s
linux clang --disable-ssl	2m 15s
linux gcc --disable-ssl	2m 18s
linux clang address,undefined test	17m 3s
linux gcc check check-dpdk dpdk	19m 54s
linux gcc c99	2m 24s
linux gcc test	8m 42s
linux gcc dpdk --enable-shared	3m 24s
linux clang dpdk --enable-shared	3m 37s
linux clang --enable-afxdp	2m 41s
linux gcc check-kernel 100-	14m 7s
linux gcc check-kernel -100	7m 54s
linux gcc dpdk-shared	2m 49s
linux clang dpdk-shared --enable-shared	3m 18s
linux clang check check-dpdk dpdk	19m 35s
linux clang test -ljemalloc	8m 42s
linux gcc check-ovsdb-cluster	7m 1s
linux gcc check-offloads -100	8m 24s
linux clang test --enable-shared	11m 31s
linux gcc --enable-afxdp	2m 26s
linux clang address,undefined check-kernel 100-	19m 42s
linux gcc dpdk check-system-userspace	13m 7s
linux gcc dpdk-shared --enable-shared	3m 34s
linux clang address,undefined dpdk check-system-userspace	16m 31s
linux gcc m32 --disable-ssl	2m 20s
linux clang dpdk-shared	3m 20s
linux gcc test -ljemalloc	7m 19s
linux clang address,undefined check-kernel -100	10m 54s
linux gcc check-offloads 100-	6m 32s
linux gcc dpdk check-system-tso	12m 25s
linux gcc dpdk check-afxdp	12m 40s
clang-analyze	10m 41s
	5h 6m 50s

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