cleanup: don't .into() identical types

Author: matthiaskrgr

compiler/rustc_const_eval/src/interpret/intrinsics.rs

@@ -396,11 +396,8 @@ impl<'tcx, M: Machine<'tcx>> InterpCx<'tcx, M> {
 
                 for i in 0..dest_len {
                     let place = self.project_index(&dest, i)?;
-                    let value = if i == index {
-                        elem.clone()
-                    } else {
-                        self.project_index(&input, i)?.into()
-                    };
+                    let value =
+                        if i == index { elem.clone() } else { self.project_index(&input, i)? };
                     self.copy_op(&value, &place)?;
                 }
             }

compiler/rustc_interface/src/interface.rs

@@ -427,7 +427,7 @@ pub fn run_compiler<R: Send>(config: Config, f: impl FnOnce(&Compiler) -> R + Se
                 Err(e) => early_dcx.early_fatal(format!("failed to load fluent bundle: {e}")),
             };
 
-            let mut locale_resources = Vec::from(config.locale_resources);
+            let mut locale_resources = config.locale_resources;
             locale_resources.push(codegen_backend.locale_resource());
 
             let mut sess = rustc_session::build_session(

compiler/rustc_lint/src/if_let_rescope.rs

@@ -304,7 +304,7 @@ impl Subdiagnostic for IfLetRescopeRewrite {
                 .chain(repeat('}').take(closing_brackets.count))
                 .collect(),
         ));
-        let msg = f(diag, crate::fluent_generated::lint_suggestion.into());
+        let msg = f(diag, crate::fluent_generated::lint_suggestion);
         diag.multipart_suggestion_with_style(
             msg,
             suggestions,