Fix bug in implicit_return.

clippy_lints/src/implicit_return.rs

@@ -47,7 +47,8 @@ pub struct Pass;
 impl Pass {
     fn expr_match(cx: &LateContext<'_, '_>, expr: &rustc::hir::Expr) {
         match &expr.node {
-            ExprKind::Block(block, ..) => {
+            // loops could be using `break` instead of `return`
+            ExprKind::Block(block, ..) | ExprKind::Loop(block, ..) => {
                 if let Some(expr) = &block.expr {
                     Self::expr_match(cx, expr);
                 }
@@ -85,12 +86,6 @@ impl Pass {
                     Self::expr_match(cx, &arm.body);
                 }
             },
-            // loops could be using `break` instead of `return`
-            ExprKind::Loop(block, ..) => {
-                if let Some(expr) = &block.expr {
-                    Self::expr_match(cx, expr);
-                }
-            },
             // skip if it already has a return statement
             ExprKind::Ret(..) => (),
             // everything else is missing `return`

tests/ui/implicit_return.stderr

@@ -30,6 +30,12 @@ error: missing return statement
 38 |             true
    |             ^^^^ help: add `return` as shown: `return true`
 
+error: missing return statement
+  --> $DIR/implicit_return.rs:46:9
+   |
+46 |         break true;
+   |         ^^^^^^^^^^ help: change `break` to `return` as shown: `return true`
+
 error: missing return statement
   --> $DIR/implicit_return.rs:52:9
    |
@@ -42,5 +48,5 @@ error: missing return statement
 54 |     let _ = || true;
    |                ^^^^ help: add `return` as shown: `return true`
 
-error: aborting due to 7 previous errors
+error: aborting due to 8 previous errors