bbolt: panic: 64bit unaligned in arm32

Version: f3bb36466ac65b51d831a6eabcd78dde5f57feb7

fatal error: sync: unlock of unlocked mutex

goroutine 11 [running]:
sync.fatal({0xb6e53f9e, 0x1e})
        $GOROOT/src/runtime/panic.go:1061 +0x24
sync.(*Mutex).unlockSlow(0x8e0a7034, 0xffffffff)
        $GOROOT/src/sync/mutex.go:229 +0x38
sync.(*Mutex).Unlock(0x8e0a7034)
        $GOROOT/src/sync/mutex.go:223 +0x44
go.etcd.io/bbolt.(*Tx).close(0x8e145cc0)
        pkg/mod/go.etcd.io/bbolt@v0.0.0/tx.go:314 +0x1e4
go.etcd.io/bbolt.(*Tx).rollback(0x8e145cc0)
        pkg/mod/go.etcd.io/bbolt@v0.0.0/tx.go:299 +0x13c
go.etcd.io/bbolt.(*DB).Update.func1()
        pkg/mod/go.etcd.io/bbolt@v0.0.0/db.go:858 +0x28
panic({0xb7d08ea8, 0xb7e7c630})
        $GOROOT/src/runtime/panic.go:914 +0x26c
runtime/internal/atomic.panicUnaligned()
        $GOROOT/src/runtime/internal/atomic/unaligned.go:8 +0x2c
runtime/internal/atomic.Xadd64(0x8e0a6fa4, 0x1)
        $GOROOT/src/runtime/internal/atomic/atomic_arm.s:258 +0x14
go.etcd.io/bbolt.(*TxStats).IncPageCount(...)
        pkg/mod/go.etcd.io/bbolt@v0.0.0/tx.go:683
go.etcd.io/bbolt.(*TxStats).add(0x8e0a6fa4, 0x8e145cf0)
        pkg/mod/go.etcd.io/bbolt@v0.0.0/tx.go:642 +0xec
go.etcd.io/bbolt.(*Tx).close(0x8e145cc0)
        pkg/mod/go.etcd.io/bbolt@v0.0.0/tx.go:322 +0x25c
go.etcd.io/bbolt.(*Tx).Commit(0x8e145cc0)
        pkg/mod/go.etcd.io/bbolt@v0.0.0/tx.go:230 +0x450
go.etcd.io/bbolt.(*DB).Update(0x8e0a6f20, 0x8e04cf90)
        pkg/mod/go.etcd.io/bbolt@v0.0.0/db.go:873 +0x100
go.etcd.io/bbolt.(*batch).run(0x8e150e20)
        pkg/mod/go.etcd.io/bbolt@v0.0.0/db.go:981 +0x110
sync.(*Once).doSlow(0x8e150e28, 0x8e04cfe4)
        $GOROOT/src/sync/once.go:74 +0xc0
sync.(*Once).Do(0x8e150e28, 0x8e04cfe4)
        $GOROOT/src/sync/once.go:65 +0x40
go.etcd.io/bbolt.(*batch).trigger(...)
        pkg/mod/go.etcd.io/bbolt@v0.0.0/db.go:963
created by time.goFunc
        $GOROOT/src/time/sleep.go:176 +0x30

Related code: https://github.com/etcd-io/bbolt/blob/ef065626c30a379c5b336c96a8175abb19b78425/tx.go#L26-L43