flush more often on ibd (#291)

If we die (or get stopped) while on IBD, we might lose all our work.
This commit tries to fix this by flushing more often during IBD, so our
work gets persisted.

crates/floresta-chain/src/pruned_utreexo/chain_state.rs

@@ -1102,7 +1102,7 @@ impl<PersistedState: ChainStore> UpdatableChainstate for ChainState<PersistedSta
             block.txdata.len()
         );
 
-        if !self.is_in_idb() {
+        if !self.is_in_idb() || height % 10_000 == 0 {
             self.flush()?;
         }
 

crates/floresta-wire/src/p2p_wire/chain_selector.rs

@@ -721,6 +721,7 @@ where
             // We downloaded all headers in the most-pow chain, and all our peers agree
             // this is the most-pow chain, we're done!
             if self.1.state == ChainSelectorState::Done {
+                try_and_log!(self.chain.flush());
                 break;
             }