Fix warnings

Author: sergey-miryanov

Objects/longobject.c

@@ -4879,8 +4879,6 @@ static PyObject *
 long_divmod(PyObject *a, PyObject *b)
 {
     PyLongObject *div, *mod;
-    PyObject *z;
-
     CHECK_BINOP(a, b);
 
     if (l_divmod((PyLongObject*)a, (PyLongObject*)b, &div, &mod) < 0) {
@@ -6110,7 +6108,7 @@ PyObject *
 _PyLong_DivmodNear(PyObject *a, PyObject *b)
 {
     PyLongObject *quo = NULL, *rem = NULL;
-    PyObject *twice_rem, *result, *temp;
+    PyObject *twice_rem, *temp;
     int quo_is_odd, quo_is_neg;
     Py_ssize_t cmp;
 
@@ -6353,7 +6351,6 @@ static PyObject *
 int_as_integer_ratio_impl(PyObject *self)
 /*[clinic end generated code: output=e60803ae1cc8621a input=384ff1766634bec2]*/
 {
-    PyObject *ratio_tuple;
     PyObject *numerator = long_long(self);
     if (numerator == NULL) {
         return NULL;