message: fix a clippy warning
diff: @@ -431,7 +431,7 @@ impl<'cfg> Workspace<'cfg> {
  // but that's not quite right as it won't deal with overlaps.
  let mut combined = from_config;
  for (url, deps_from_manifest) in from_manifest {
  - if let Some(deps_from_config) = combined.get_mut(&url) {
  + if let Some(deps_from_config) = combined.get_mut(url) {
  // We want from_config to take precedence for each patched name.
  // NOTE: This is inefficient if the number of patches is large!
  let mut from_manifest_pruned = deps_from_manifest.clone();
  