Fix use of YieldFrom instead of AsyncYieldFrom in the AST

Co-authored-by: Peter Bierma <zintensitydev@gmail.com>

Author: ZeroIntensity

Python/ast_preprocess.c

@@ -576,7 +576,7 @@ astfold_expr(expr_ty node_, PyArena *ctx_, _PyASTPreprocessState *state)
         CALL(astfold_expr, expr_ty, node_->v.YieldFrom.value);
         break;
     case AsyncYieldFrom_kind:
-        CALL(astfold_expr, expr_ty, node_->v.YieldFrom.value);
+        CALL(astfold_expr, expr_ty, node_->v.AsyncYieldFrom.value);
         break;
     case Compare_kind:
         CALL(astfold_expr, expr_ty, node_->v.Compare.left);

Python/ast_unparse.c

@@ -913,7 +913,7 @@ static int
 append_ast_async_yield_from(PyUnicodeWriter *writer, expr_ty e)
 {
     APPEND_STR("(async yield from ");
-    APPEND_EXPR(e->v.YieldFrom.value, PR_TEST);
+    APPEND_EXPR(e->v.AsyncYieldFrom.value, PR_TEST);
     APPEND_CHAR_FINISH(')');
 }