Correcting some trivial Rust option/iterator warts

2020-01-16 07:36:29 -08:00
parent 18aceea225
commit 865275e2a2
9 changed files with 37 additions and 70 deletions
--- a/zcash_client_backend/src/welding_rig.rs
+++ b/zcash_client_backend/src/welding_rig.rs
@@ -134,12 +134,11 @@ pub fn scan_block(
            // mutable references to wtxs for too long.
            let mut block_witnesses: Vec<_> = wtxs
                .iter_mut()
-                .map(|tx| {
+                .flat_map(|tx| {
                    tx.shielded_outputs
                        .iter_mut()
                        .map(|output| &mut output.witness)
                })
-                .flatten()
                .collect();

            for to_scan in tx.outputs.into_iter().enumerate() {