add proc macro check to needless_return

Author: y21

clippy_lints/src/returns.rs

@@ -407,7 +407,7 @@ fn check_final_expr<'tcx>(
                 }
             }
 
-            if ret_span.from_expansion() {
+            if ret_span.from_expansion() || is_from_proc_macro(cx, expr) {
                 return;
             }
 

tests/ui/needless_return.fixed

@@ -1,3 +1,4 @@
+//@aux-build:proc_macros.rs
 #![feature(yeet_expr)]
 #![allow(unused)]
 #![allow(
@@ -9,6 +10,9 @@
 )]
 #![warn(clippy::needless_return)]
 
+extern crate proc_macros;
+use proc_macros::with_span;
+
 use std::cell::RefCell;
 
 macro_rules! the_answer {
@@ -359,4 +363,8 @@ fn issue12907() -> String {
     "".split("").next().unwrap().to_string()
 }
 
+fn issue13458() {
+    with_span!(span return);
+}
+
 fn main() {}

tests/ui/needless_return.rs

@@ -1,3 +1,4 @@
+//@aux-build:proc_macros.rs
 #![feature(yeet_expr)]
 #![allow(unused)]
 #![allow(
@@ -9,6 +10,9 @@
 )]
 #![warn(clippy::needless_return)]
 
+extern crate proc_macros;
+use proc_macros::with_span;
+
 use std::cell::RefCell;
 
 macro_rules! the_answer {
@@ -369,4 +373,8 @@ fn issue12907() -> String {
     return "".split("").next().unwrap().to_string();
 }
 
+fn issue13458() {
+    with_span!(span return);
+}
+
 fn main() {}