If the coveralls token is not set, don't try to push the coverage report.
If the coveralls token is not set, don't try to push the coverage report.

kylelemons/gousb,google/gousb,kylelemons/gousb,google/gousb,bernhardgoedel/gousb,bernhardgoedel/gousb,bernhardgoedel/gousb,google/gousb,kylelemons/gousb