Fix error in calc_connected_components if there are no active buses
#690
| Job | Run time |
|---|---|
| 7m 6s | |
| 7m 27s | |
| 8m 31s | |
| 10m 3s | |
| 10m 38s | |
| 12m 19s | |
| 56m 4s |
calc_connected_components if there are no active buses
#690
| Job | Run time |
|---|---|
| 7m 6s | |
| 7m 27s | |
| 8m 31s | |
| 10m 3s | |
| 10m 38s | |
| 12m 19s | |
| 56m 4s |