If --type is used, fifos/sockets/etc. are always shown

A socket:
```
> ls -alh Commands 
srwxr-xr-x 1 shark shark 0 28. Apr 2015  Commands
```

Actual output:
```
> fd -t f Commands 
Commands

> fd -t d Commands 
Commands

> fd -t l Commands 
Commands
```

Expected output:
```
> fd -t f Commands 

> fd -t d Commands 

> fd -t l Commands 
```