cxxrtl: fix handling of 0-bit variables in vcd_writer.sample().
#1040
| Job | Run time |
|---|---|
| 4s | |
| 14m 38s | |
| 32s | |
| 8m 7s | |
| 19m 24s | |
| 10m 21s | |
| 53m 6s |
vcd_writer.sample().
#1040
| Job | Run time |
|---|---|
| 4s | |
| 14m 38s | |
| 32s | |
| 8m 7s | |
| 19m 24s | |
| 10m 21s | |
| 53m 6s |