Commit 719c0a4d authored by Hans-Peter Deifel's avatar Hans-Peter Deifel 🐢

wta: Don't generate zero edges when we decided not to

This is currently only implemented for the case where --different-values is
supplied.

When the random experiment says that we should generate non-zero edge, we should
rule out the possibility that this edge gets assigned a random weight of zero.
With small --different-values, zero edges would have become way more likely.
parent a2c3b0e2