chain+wallet: fix race over RescanProgress message
#456
| Job | Run time |
|---|---|
| 6m 19s | |
| 1m 41s | |
| 1m 49s | |
| 9m 49s |
RescanProgress message
#456
| Job | Run time |
|---|---|
| 6m 19s | |
| 1m 41s | |
| 1m 49s | |
| 9m 49s |