use faster method lookup in generator code

Cython/Utility/Generator.c

@@ -80,6 +80,7 @@ static int __Pyx_PyGen_FetchStopIterationValue(PyObject **pvalue);
 //@requires: Exceptions.c::SwapException
 //@requires: Exceptions.c::RaiseException
 //@requires: ObjectHandling.c::PyObjectCallMethod1
+//@requires: ObjectHandling.c::PyObjectGetAttrStr
 //@requires: CommonTypes.c::FetchCommonType
 
 static PyObject *__Pyx_Generator_Next(PyObject *self);
@@ -148,7 +149,7 @@ static int __Pyx_PyGen_FetchStopIterationValue(PyObject **pvalue) {
     Py_DECREF(ev);
 #else
     {
-        PyObject* args = PyObject_GetAttr(ev, PYIDENT("args"));
+        PyObject* args = __Pyx_PyObject_GetAttrStr(ev, PYIDENT("args"));
         Py_DECREF(ev);
         if (likely(args)) {
             value = PyObject_GetItem(args, 0);
@@ -335,7 +336,7 @@ static int __Pyx_Generator_CloseIter(__pyx_GeneratorObject *gen, PyObject *yf) {
     } else {
         PyObject *meth;
         gen->is_running = 1;
-        meth = PyObject_GetAttr(yf, PYIDENT("close"));
+        meth = __Pyx_PyObject_GetAttrStr(yf, PYIDENT("close"));
         if (unlikely(!meth)) {
             if (!PyErr_ExceptionMatches(PyExc_AttributeError)) {
                 PyErr_WriteUnraisable(yf);
@@ -420,7 +421,7 @@ static PyObject *__Pyx_Generator_Throw(PyObject *self, PyObject *args) {
         if (__Pyx_Generator_CheckExact(yf)) {
             ret = __Pyx_Generator_Throw(yf, args);
         } else {
-            PyObject *meth = PyObject_GetAttr(yf, PYIDENT("throw"));
+            PyObject *meth = __Pyx_PyObject_GetAttrStr(yf, PYIDENT("throw"));
             if (unlikely(!meth)) {
                 Py_DECREF(yf);
                 if (!PyErr_ExceptionMatches(PyExc_AttributeError)) {