Fix syntax errors in setup script
Fix syntax errors in setup script

Trying to run the setup script results in errors. This fixes them.

```
/bin/sh: line 2: f: command not found
/bin/sh: line 4: syntax error near unexpected token `fi'
/bin/sh: line 4: `fi'
```
KeizerDev/Rhythmbox-Chromecast,KeizerDev/Rhythmbox-Chromecast