systemd:fuzz-hostname-setup: Crash in fmemopen_unlocked

Detailed Report: https://oss-fuzz.com/testcase?key=6557557652324352 Project: systemd Fuzzing Engine: centipede Fuzz Target: fuzz-hostname-setup Job Type: centipedeasansystemd Platform Id: linux Crash Type: UNKNOWN READ Crash Address: 0x1c5f01dd8d6f Crash State: fmemopenunlocked fuzz.h...