Add tests for illegal use bound syntax

compiler/rustc_ast_passes/src/ast_validation.rs

@@ -1424,7 +1424,7 @@ impl<'a> Visitor<'a> for AstValidator<'a> {
                     self.dcx().emit_err(errors::PreciseCapturingNotAllowedHere {
                         loc: ctxt.descr(),
                         span: *span,
-                    })
+                    });
                 }
             },
         }