gh-90699: Use _Py_STR(empty) instead of PyUnicode_New(0, 0) for BUILD_STRING (GH...

diff --git a/Python/ceval.c b/Python/ceval.c
index b46b1ef84293926c4f2c9b2f56076ad9d73ff909..7891547ffc687174baa12e2d2783904f5e3fd9f3 100644 (file)
--- a/Python/ceval.c
+++ b/Python/ceval.c
@@ -3152,12 +3152,8 @@ handle_eval_breaker:
 
         TARGET(BUILD_STRING) {
             PyObject *str;
-            PyObject *empty = PyUnicode_New(0, 0);
-            if (empty == NULL) {
-                goto error;
-            }
-            str = _PyUnicode_JoinArray(empty, stack_pointer - oparg, oparg);
-            Py_DECREF(empty);
+            str = _PyUnicode_JoinArray(&_Py_STR(empty),
+                                       stack_pointer - oparg, oparg);
             if (str == NULL)
                 goto error;
             while (--oparg >= 0) {