Add semicolon_if_nothing_returned test for let-else stmts

Author: dswij

tests/ui/semicolon_if_nothing_returned.rs

@@ -1,6 +1,7 @@
 #![warn(clippy::semicolon_if_nothing_returned)]
 #![allow(clippy::redundant_closure)]
 #![feature(label_break_value)]
+#![feature(let_else)]
 
 fn get_unit() {}
 
@@ -110,3 +111,12 @@ fn macro_with_semicolon() {
     }
     repro!();
 }
+
+fn function_returning_option() -> Option<i32> {
+    Some(1)
+}
+
+// No warning
+fn let_else_stmts() {
+    let Some(x) = function_returning_option() else { return; };
+}

tests/ui/semicolon_if_nothing_returned.stderr

@@ -1,31 +1,31 @@
 error: consider adding a `;` to the last statement for consistent formatting
-  --> $DIR/semicolon_if_nothing_returned.rs:9:5
+  --> $DIR/semicolon_if_nothing_returned.rs:10:5
    |
 LL |     println!("Hello")
    |     ^^^^^^^^^^^^^^^^^ help: add a `;` here: `println!("Hello");`
    |
    = note: `-D clippy::semicolon-if-nothing-returned` implied by `-D warnings`
 
 error: consider adding a `;` to the last statement for consistent formatting
-  --> $DIR/semicolon_if_nothing_returned.rs:13:5
+  --> $DIR/semicolon_if_nothing_returned.rs:14:5
    |
 LL |     get_unit()
    |     ^^^^^^^^^^ help: add a `;` here: `get_unit();`
 
 error: consider adding a `;` to the last statement for consistent formatting
-  --> $DIR/semicolon_if_nothing_returned.rs:18:5
+  --> $DIR/semicolon_if_nothing_returned.rs:19:5
    |
 LL |     y = x + 1
    |     ^^^^^^^^^ help: add a `;` here: `y = x + 1;`
 
 error: consider adding a `;` to the last statement for consistent formatting
-  --> $DIR/semicolon_if_nothing_returned.rs:24:9
+  --> $DIR/semicolon_if_nothing_returned.rs:25:9
    |
 LL |         hello()
    |         ^^^^^^^ help: add a `;` here: `hello();`
 
 error: consider adding a `;` to the last statement for consistent formatting
-  --> $DIR/semicolon_if_nothing_returned.rs:35:9
+  --> $DIR/semicolon_if_nothing_returned.rs:36:9
    |
 LL |         ptr::drop_in_place(s.as_mut_ptr())
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: add a `;` here: `ptr::drop_in_place(s.as_mut_ptr());`