Fix a bug that cannot load port settings from .cncrc on current versions (resolves #156)
Fix a bug that cannot load port settings from .cncrc on current versions (resolves #156)

cheton/piduino-grbl,cncjs/cncjs,cheton/cnc.js,cncjs/cncjs,cheton/piduino-grbl,cncjs/cncjs,cheton/cnc,cheton/piduino-grbl,cheton/cnc.js,cheton/cnc.js,cheton/cnc,cheton/cnc