NPE select

[RobinUS2]

$ cloudpelican
cloudpelican> select * from stream:default as 's00'
cloudpelican>
panic: runtime error: invalid memory address or nil pointer dereference
[signal 0xb code=0x1 addr=0x0 pc=0x13028]

goroutine 27 [running]:
runtime.panic(0x2e8b40, 0x4d1e84)
/usr/local/go/src/pkg/runtime/panic.c:279 +0xf5
main.func·001()
/Users/robin/Documents/cloudpelican-lsd/cli/cloudpelican-lsd.go:551 +0xf78
created by main.executeSelect
/Users/robin/Documents/cloudpelican-lsd/cli/cloudpelican-lsd.go:623 +0x957

[RobinUS2]

Fixed.