Fix points at nonexisting .await

compiler/rustc_parse/src/parser/diagnostics.rs

@@ -1666,14 +1666,8 @@ impl<'a> Parser<'a> {
             self.recover_await_prefix(await_sp)?
         };
         let sp = self.error_on_incorrect_await(lo, hi, &expr, is_question);
-        let kind = match expr.kind {
-            // Avoid knock-down errors as we don't know whether to interpret this as `foo().await?`
-            // or `foo()?.await` (the very reason we went with postfix syntax 😅).
-            ExprKind::Try(_) => ExprKind::Err,
-            _ => ExprKind::Await(expr, await_sp),
-        };
-        let expr = self.mk_expr(lo.to(sp), kind);
-        self.maybe_recover_from_bad_qpath(expr)
+
+        Ok(self.mk_expr(sp, ExprKind::Err))
     }
 
     fn recover_await_macro(&mut self) -> PResult<'a, (Span, P<Expr>, bool)> {

tests/ui/parser/bad-await-body.rs

@@ -0,0 +1,4 @@
+fn main() {
+    await{}()
+    //~^   ERROR: cannot find struct, variant or union type `await` in this scope
+}

tests/ui/parser/bad-await-body.stderr

@@ -0,0 +1,9 @@
+error[E0422]: cannot find struct, variant or union type `await` in this scope
+  --> $DIR/bad-await-body.rs:2:5
+   |
+LL |     await{}()
+   |     ^^^^^ not found in this scope
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0422`.