fix __Pyx_Raise() in pypy3

Cython/Utility/Exceptions.c

@@ -213,6 +213,13 @@ static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb, PyObject
     PyErr_SetObject(type, value);
 
     if (tb) {
+#if CYTHON_COMPILING_IN_PYPY
+        PyObject *tmp_type, *tmp_value, *tmp_tb;
+        PyErr_Fetch(tmp_type, tmp_value, tmp_tb);
+        Py_INCREF(tb);
+        PyErr_Restore(tmp_type, tmp_value, tb);
+        Py_XDECREF(tmp_tb);
+#else
         PyThreadState *tstate = PyThreadState_GET();
         PyObject* tmp_tb = tstate->curexc_traceback;
         if (tb != tmp_tb) {
@@ -220,6 +227,7 @@ static void __Pyx_Raise(PyObject *type, PyObject *value, PyObject *tb, PyObject
             tstate->curexc_traceback = tb;
             Py_XDECREF(tmp_tb);
         }
+#endif
     }
 
 bad: