Panic when using some date functions
This triggers a panic:
```golang
package main
import (
"database/sql"
_ "modernc.org/sqlite"
)
func main() {
dbh, err := sql.Open("sqlite", "db.db")
if err != nil {
panic(err)
}
if _, err := dbh.Exec(`
SELECT DATE("now", "localtime")
`); err != nil {
panic(err)
}
}
```
And yet this works:
```bash
echo 'SELECT DATE("now", "localtime")' | sqlite3
```
issue