Remove a suggestion that is redundant

Author: compiler-errors

compiler/rustc_hir_typeck/src/_match.rs

@@ -118,7 +118,6 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                         prior_arm_ty,
                         prior_arm_span,
                         scrut_span: scrut.span,
-                        scrut_hir_id: scrut.hir_id,
                         source: match_src,
                         prior_non_diverging_arms: prior_non_diverging_arms.clone(),
                         opt_suggest_box_span,

compiler/rustc_infer/src/infer/error_reporting/mod.rs

@@ -780,7 +780,6 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> {
                 ref prior_non_diverging_arms,
                 opt_suggest_box_span,
                 scrut_span,
-                scrut_hir_id,
                 ..
             }) => match source {
                 hir::MatchSource::TryDesugar(scrut_hir_id) => {
@@ -848,18 +847,6 @@ impl<'tcx> TypeErrCtxt<'_, 'tcx> {
                     ) {
                         err.subdiagnostic(subdiag);
                     }
-                    if let hir::Node::Expr(m) = self.tcx.parent_hir_node(scrut_hir_id)
-                        && let hir::Node::Stmt(stmt) = self.tcx.parent_hir_node(m.hir_id)
-                        && let hir::StmtKind::Expr(_) = stmt.kind
-                    {
-                        err.span_suggestion_verbose(
-                            stmt.span.shrink_to_hi(),
-                            "consider using a semicolon here, but this will discard any values \
-                             in the match arms",
-                            ";",
-                            Applicability::MaybeIncorrect,
-                        );
-                    }
                     if let Some(ret_sp) = opt_suggest_box_span {
                         // Get return type span and point to it.
                         self.suggest_boxing_for_return_impl_trait(

compiler/rustc_middle/src/traits/mod.rs

@@ -569,7 +569,6 @@ pub struct MatchExpressionArmCause<'tcx> {
     pub prior_arm_ty: Ty<'tcx>,
     pub prior_arm_span: Span,
     pub scrut_span: Span,
-    pub scrut_hir_id: hir::HirId,
     pub source: hir::MatchSource,
     pub prior_non_diverging_arms: Vec<Span>,
     pub opt_suggest_box_span: Option<Span>,

tests/ui/match/dont-highlight-diverging-arms.rs

@@ -14,4 +14,4 @@ fn main() {
 
         None
     };
-}
+}

tests/ui/match/dont-highlight-diverging-arms.stderr

@@ -15,10 +15,6 @@ LL | |         }
    |
    = note:   expected enum `Option<u16>`
            found unit type `()`
-help: consider using a semicolon here, but this will discard any values in the match arms
-   |
-LL |         };
-   |          +
 
 error: aborting due to 1 previous error
 

tests/ui/suggestions/issue-81839.stderr

@@ -4,22 +4,15 @@ error[E0308]: `match` arms have incompatible types
 LL | /     match num {
 LL | |         1 => {
 LL | |             cx.answer_str("hi");
-   | |             -------------------- this is found to be of type `()`
+   | |             --------------------
+   | |             |                  |
+   | |             |                  help: consider removing this semicolon
+   | |             this is found to be of type `()`
 LL | |         }
 LL | |         _ => cx.answer_str("hi"),
    | |              ^^^^^^^^^^^^^^^^^^^ expected `()`, found future
 LL | |     }
    | |_____- `match` arms have incompatible types
-   |
-help: consider removing this semicolon
-   |
-LL -             cx.answer_str("hi");
-LL +             cx.answer_str("hi")
-   |
-help: consider using a semicolon here, but this will discard any values in the match arms
-   |
-LL |     };
-   |      +
 
 error: aborting due to 1 previous error