codegen_llvm: remove explicit returns

src/librustc_codegen_llvm/builder.rs

@@ -1194,7 +1194,7 @@ impl Builder<'a, 'll, 'tcx> {
             })
             .collect();
 
-        return Cow::Owned(casted_args);
+        Cow::Owned(casted_args)
     }
 
     pub fn lifetime_start(&self, ptr: &'ll Value, size: Size) {

src/librustc_codegen_llvm/context.rs

@@ -771,5 +771,6 @@ fn declare_intrinsic(cx: &CodegenCx<'ll, '_>, key: &str) -> Option<&'ll Value> {
         ifn!("llvm.dbg.declare", fn(Type::metadata(cx), Type::metadata(cx)) -> void);
         ifn!("llvm.dbg.value", fn(Type::metadata(cx), t_i64, Type::metadata(cx)) -> void);
     }
-    return None;
+
+    None
 }

src/librustc_codegen_llvm/intrinsic.rs

@@ -972,7 +972,7 @@ fn get_rust_try_fn<'ll, 'tcx>(
     let output = tcx.types.i32;
     let rust_try = gen_fn(cx, "__rust_try", vec![fn_ty, i8p, i8p], output, codegen);
     cx.rust_try_fn.set(Some(rust_try));
-    return rust_try
+    rust_try
 }
 
 fn span_invalid_monomorphization_error(a: &Session, b: Span, c: &str) {