Tweak span for variant not found error

src/librustc_typeck/astconv.rs

@@ -1650,7 +1650,10 @@ impl<'o, 'tcx> dyn AstConv<'tcx> + 'o {
                             Applicability::MaybeIncorrect,
                         );
                     } else {
-                        err.span_label(span, format!("variant not found in `{}`", qself_ty));
+                        err.span_label(
+                            assoc_ident.span,
+                            format!("variant not found in `{}`", qself_ty),
+                        );
                     }
 
                     if let Some(sp) = tcx.hir().span_if_local(adt_def.did) {

src/test/ui/suggestions/suggest-variants.stderr

@@ -23,9 +23,7 @@ LL | enum Shape {
    | ---------- variant `Rombus` not found here
 ...
 LL |     println!("My shape is {:?}", Shape::Rombus{ size: 5});
-   |                                  -------^^^^^^
-   |                                  |
-   |                                  variant not found in `Shape`
+   |                                         ^^^^^^ variant not found in `Shape`
 
 error[E0599]: no variant or associated item named `Squareee` found for type `Shape` in the current scope
   --> $DIR/suggest-variants.rs:15:12