terminal/command: bugfix: wrong check in sourceCommand
terminal/command: bugfix: wrong check in sourceCommand

Fixes #312

visualfc/delve,aarzilli/delve,dr2chase/delve,go-delve/delve,go-delve/delve,derekparker/delve,ggndnn/delve,alexbrainman/delve,alexbrainman/delve,go-delve/delve,visualfc/delve,derekparker/delve,alexbrainman/delve,dlsniper/delve,go-delve/delve,aarzilli/delve,aarzilli/delve,dr2chase/delve,aarzilli/delve,derekparker/delve,ggndnn/delve,dlsniper/delve,go-delve/delve,ggndnn/delve,dr2chase/delve,dlsniper/delve,visualfc/delve