Issue #25845: Merge PyLong_Check() cleanup from 3.5

Modules/_ctypes/cfield.c

@@ -1375,7 +1375,7 @@ Z_set(void *ptr, PyObject *value, Py_ssize_t size)
         Py_INCREF(value);
         return value;
     }
-    if (PyLong_Check(value) || PyLong_Check(value)) {
+    if (PyLong_Check(value)) {
 #if SIZEOF_VOID_P == SIZEOF_LONG_LONG
         *(wchar_t **)ptr = (wchar_t *)PyLong_AsUnsignedLongLongMask(value);
 #else
@@ -1491,7 +1491,7 @@ P_set(void *ptr, PyObject *value, Py_ssize_t size)
         _RET(value);
     }
 
-    if (!PyLong_Check(value) && !PyLong_Check(value)) {
+    if (!PyLong_Check(value)) {
         PyErr_SetString(PyExc_TypeError,
                         "cannot be converted to pointer");
         return NULL;