a lot of clippy::style fixes

xtask/src/codegen/gen_syntax.rs

@@ -707,7 +707,7 @@ fn extract_struct_trait(node: &mut AstNodeSrc, trait_name: &str, methods: &[&str
     let mut to_remove = Vec::new();
     for (i, field) in node.fields.iter().enumerate() {
         let method_name = field.method_name().to_string();
-        if methods.iter().any(|&it| it == &method_name) {
+        if methods.iter().any(|&it| it == method_name) {
             to_remove.push(i);
         }
     }

xtask/src/main.rs

@@ -37,7 +37,7 @@ fn main() -> Result<()> {
     match flags.subcommand {
         flags::XtaskCmd::Help(_) => {
             println!("{}", flags::Xtask::HELP);
-            return Ok(());
+            Ok(())
         }
         flags::XtaskCmd::Install(cmd) => cmd.run(),
         flags::XtaskCmd::FuzzTests(_) => run_fuzzer(),

xtask/src/tidy.rs

@@ -193,7 +193,7 @@ https://github.blog/2015-06-08-how-to-undo-almost-anything-with-git/#redo-after-
     }
 }
 
-fn deny_clippy(path: &PathBuf, text: &String) {
+fn deny_clippy(path: &Path, text: &str) {
     let ignore = &[
         // The documentation in string literals may contain anything for its own purposes
         "ide_completion/src/generated_lint_completions.rs",