Do not consider macro-origin await as chain item (#3671)

Author: topecongiro

src/chains.rs

@@ -168,7 +168,7 @@ impl ChainItemKind {
                 let span = mk_sp(nested.span.hi(), field.span.hi());
                 (kind, span)
             }
-            ast::ExprKind::Await(_, ref nested) => {
+            ast::ExprKind::Await(ast::AwaitOrigin::FieldLike, ref nested) => {
                 let span = mk_sp(nested.span.hi(), expr.span.hi());
                 (ChainItemKind::Await, span)
             }
@@ -396,7 +396,9 @@ impl Chain {
             }
             ast::ExprKind::Field(ref subexpr, _)
             | ast::ExprKind::Try(ref subexpr)
-            | ast::ExprKind::Await(_, ref subexpr) => Some(Self::convert_try(subexpr, context)),
+            | ast::ExprKind::Await(ast::AwaitOrigin::FieldLike, ref subexpr) => {
+                Some(Self::convert_try(subexpr, context))
+            }
             _ => None,
         }
     }

tests/source/async_fn.rs

@@ -19,3 +19,8 @@ async unsafe fn rust() {
         Ok(())
     }
 }
+
+async fn await_macro() {
+    await ! (
+        something)?;
+}

tests/target/async_fn.rs

@@ -18,3 +18,7 @@ async unsafe fn rust() {
         Ok(())
     }
 }
+
+async fn await_macro() {
+    await!(something)?;
+}