bpo-35606: Fix math.prod tests using 'start' as keyword parameter (GH-28595)

(cherry picked from commit 84975146a7ce64f1d50dcec8311b7f7188a5c962)

Co-authored-by: Pablo Galindo Salgado <Pablogsal@gmail.com>

1 files changed, 3 insertions, 8 deletions

diff --git a/Modules/mathmodule.c b/Modules/mathmodule.c
index a2a2db2..16da008 100644
--- a/Modules/mathmodule.c
+++ b/Modules/mathmodule.c
@@ -3081,14 +3081,9 @@ math_prod_impl(PyObject *module, PyObject *iterable, PyObject *start)
     }
 
     if (result == NULL) {
-        result = PyLong_FromLong(1);
-        if (result == NULL) {
-            Py_DECREF(iter);
-            return NULL;
-        }
-    } else {
-        Py_INCREF(result);
+        result = _PyLong_GetOne();
     }
+    Py_INCREF(result);
 #ifndef SLOW_PROD
     /* Fast paths for integers keeping temporary products in C.
      * Assumes all inputs are the same type.
@@ -3104,7 +3099,7 @@ math_prod_impl(PyObject *module, PyObject *iterable, PyObject *start)
         }
         /* Loop over all the items in the iterable until we finish, we overflow
          * or we found a non integer element */
-        while(result == NULL) {
+        while (result == NULL) {
             item = PyIter_Next(iter);
             if (item == NULL) {
                 Py_DECREF(iter);