gomach: fix reassign before usage error
gomach: fix reassign before usage error

A-Paul/RIOT,rfuentess/RIOT,miri64/RIOT,x3ro/RIOT,authmillenon/RIOT,basilfx/RIOT,basilfx/RIOT,OlegHahm/RIOT,authmillenon/RIOT,RIOT-OS/RIOT,smlng/RIOT,yogo1212/RIOT,kYc0o/RIOT,miri64/RIOT,mfrey/RIOT,x3ro/RIOT,cladmi/RIOT,aeneby/RIOT,A-Paul/RIOT,ant9000/RIOT,toonst/RIOT,authmillenon/RIOT,kYc0o/RIOT,smlng/RIOT,miri64/RIOT,basilfx/RIOT,authmillenon/RIOT,kaspar030/RIOT,mfrey/RIOT,basilfx/RIOT,OlegHahm/RIOT,aeneby/RIOT,mtausig/RIOT,OlegHahm/RIOT,josephnoir/RIOT,RIOT-OS/RIOT,josephnoir/RIOT,BytesGalore/RIOT,RIOT-OS/RIOT,x3ro/RIOT,mfrey/RIOT,aeneby/RIOT,kYc0o/RIOT,A-Paul/RIOT,x3ro/RIOT,smlng/RIOT,yogo1212/RIOT,rfuentess/RIOT,ant9000/RIOT,aeneby/RIOT,cladmi/RIOT,OTAkeys/RIOT,basilfx/RIOT,cladmi/RIOT,ant9000/RIOT,kaspar030/RIOT,yogo1212/RIOT,yogo1212/RIOT,OTAkeys/RIOT,A-Paul/RIOT,RIOT-OS/RIOT,BytesGalore/RIOT,jasonatran/RIOT,mtausig/RIOT,A-Paul/RIOT,OTAkeys/RIOT,OTAkeys/RIOT,jasonatran/RIOT,josephnoir/RIOT,toonst/RIOT,lazytech-org/RIOT,lazytech-org/RIOT,kYc0o/RIOT,lazytech-org/RIOT,toonst/RIOT,cladmi/RIOT,mtausig/RIOT,OTAkeys/RIOT,BytesGalore/RIOT,yogo1212/RIOT,smlng/RIOT,josephnoir/RIOT,rfuentess/RIOT,lazytech-org/RIOT,yogo1212/RIOT,jasonatran/RIOT,josephnoir/RIOT,smlng/RIOT,kaspar030/RIOT,kaspar030/RIOT,BytesGalore/RIOT,ant9000/RIOT,toonst/RIOT,mtausig/RIOT,rfuentess/RIOT,lazytech-org/RIOT,toonst/RIOT,miri64/RIOT,kaspar030/RIOT,authmillenon/RIOT,RIOT-OS/RIOT,x3ro/RIOT,OlegHahm/RIOT,mtausig/RIOT,OlegHahm/RIOT,mfrey/RIOT,authmillenon/RIOT,rfuentess/RIOT,kYc0o/RIOT,jasonatran/RIOT,jasonatran/RIOT,cladmi/RIOT,ant9000/RIOT,miri64/RIOT,aeneby/RIOT,mfrey/RIOT,BytesGalore/RIOT