frr:zebra: Crash in zebra_nhe_find

Detailed Report: https://oss-fuzz.com/testcase?key=5220849385340928 Project: frr Fuzzing Engine: libFuzzer Fuzz Target: zebra Job Type: libfuzzerubsanfrr Platform Id: linux Crash Type: UNKNOWN READ Crash Address: 0x00480000001f Crash State: zebranhefind zebranhgribfindnhe ribaddmultipathnhe...