minor pypy code improvements

Cython/Utility/Builtins.c

@@ -29,7 +29,7 @@ static PyObject* __Pyx_Globals(void) {
         goto bad;
     for (i = PyList_GET_SIZE(names)-1; i >= 0; i--) {
 #if CYTHON_COMPILING_IN_PYPY
-        PyObject* name = PySequence_GetItem(names, i);
+        PyObject* name = PySequence_ITEM(names, i);
         if (!name)
             goto bad;
 #else

Cython/Utility/StringTools.c

@@ -545,7 +545,7 @@ static int __Pyx_PyUnicode_Tailmatch(PyObject* s, PyObject* substr,
             result = PyUnicode_Tailmatch(s, PyTuple_GET_ITEM(substr, i),
                                          start, end, direction);
 #else
-            PyObject* sub = PySequence_GetItem(substr, i);
+            PyObject* sub = PySequence_ITEM(substr, i);
             if (unlikely(!sub)) return -1;
             result = PyUnicode_Tailmatch(s, sub, start, end, direction);
             Py_DECREF(sub);
@@ -630,7 +630,7 @@ static int __Pyx_PyBytes_Tailmatch(PyObject* self, PyObject* substr, Py_ssize_t
             result = __Pyx_PyBytes_SingleTailmatch(self, PyTuple_GET_ITEM(substr, i),
                                                    start, end, direction);
 #else
-            PyObject* sub = PySequence_GetItem(substr, i);
+            PyObject* sub = PySequence_ITEM(substr, i);
             if (unlikely(!sub)) return -1;
             result = __Pyx_PyBytes_SingleTailmatch(self, sub, start, end, direction);
             Py_DECREF(sub);