syz-fuzzer/fuzzer.go: use different prefixes for errors
syz-fuzzer/fuzzer.go: use different prefixes for errors

xairy/syzkaller,xairy/syzkaller,google/syzkaller,google/syzkaller,xairy/syzkaller,google/syzkaller,xairy/syzkaller,google/syzkaller,google/syzkaller,xairy/syzkaller,xairy/syzkaller,xairy/syzkaller,google/syzkaller,google/syzkaller