bpo-35814: Allow unpacking in r.h.s of annotated assignment expressions (GH-13760)

diff --git a/Python/ast.c b/Python/ast.c
index b775522..df92429 100644
--- a/Python/ast.c
+++ b/Python/ast.c
@@ -3398,7 +3398,7 @@
         }
         else {
             ch = CHILD(ann, 3);
-            if (TYPE(ch) == testlist) {
+            if (TYPE(ch) == testlist_star_expr) {
                 expr3 = ast_for_testlist(c, ch);
             }
             else {
diff --git a/Python/graminit.c b/Python/graminit.c
index 0587b1c..7c40ce9 100644
--- a/Python/graminit.c
+++ b/Python/graminit.c
@@ -742,7 +742,7 @@
     {0, 2},
 };
 static const arc arcs_17_3[2] = {
-    {47, 4},
+    {81, 4},
     {84, 4},
 };
 static const arc arcs_17_4[1] = {