Silence warning in r-a.

Author: cjgillot

src/tools/rust-analyzer/crates/ide-db/src/imports/merge_imports.rs

@@ -405,6 +405,8 @@ fn recursive_normalize(use_tree: &ast::UseTree, style: NormalizationStyle) -> Op
  } else {
  ted::replace_with_many(subtree.syntax(), elements);
  }
+ // Silence unused assignment warning on `modified`.
+ let _ = modified;
  modified = true;
  } else {
  modified |= recursive_normalize(&subtree, NormalizationStyle::Default).is_some();

src/tools/rust-analyzer/crates/test-fixture/src/lib.rs

@@ -383,6 +383,8 @@ impl ChangeFixture {
  }
  }
 
+ let _ = file_id;
+
  let root = match current_source_root_kind {
  SourceRootKind::Local => SourceRoot::new_local(mem::take(&mut file_set)),
  SourceRootKind::Library => SourceRoot::new_library(mem::take(&mut file_set)),