Fix some C++ warnings.

Cython/Utility/AsyncGen.c

@@ -279,19 +279,19 @@ __Pyx_async_gen_athrow(__pyx_PyAsyncGenObject *o, PyObject *args)
 
 
 static PyGetSetDef __Pyx_async_gen_getsetlist[] = {
-    {"__name__", (getter)__Pyx_Coroutine_get_name, (setter)__Pyx_Coroutine_set_name,
-     PyDoc_STR("name of the async generator"), 0},
-    {"__qualname__", (getter)__Pyx_Coroutine_get_qualname, (setter)__Pyx_Coroutine_set_qualname,
-     PyDoc_STR("qualified name of the async generator"), 0},
-    //REMOVED: {"ag_await", (getter)coro_get_cr_await, NULL,
-    //REMOVED:  PyDoc_STR("object being awaited on, or None")},
+    {(char*) "__name__", (getter)__Pyx_Coroutine_get_name, (setter)__Pyx_Coroutine_set_name,
+     (char*) PyDoc_STR("name of the async generator"), 0},
+    {(char*) "__qualname__", (getter)__Pyx_Coroutine_get_qualname, (setter)__Pyx_Coroutine_set_qualname,
+     (char*) PyDoc_STR("qualified name of the async generator"), 0},
+    //REMOVED: {(char*) "ag_await", (getter)coro_get_cr_await, NULL,
+    //REMOVED:  (char*) PyDoc_STR("object being awaited on, or None")},
     {0, 0, 0, 0, 0} /* Sentinel */
 };
 
 static PyMemberDef __Pyx_async_gen_memberlist[] = {
-    //REMOVED: {"ag_frame",   T_OBJECT, offsetof(__pyx_PyAsyncGenObject, ag_frame),   READONLY},
-    {"ag_running", T_BOOL,   offsetof(__pyx_CoroutineObject, is_running), READONLY, NULL},
-    //REMOVED: {"ag_code",    T_OBJECT, offsetof(__pyx_PyAsyncGenObject, ag_code),    READONLY},
+    //REMOVED: {(char*) "ag_frame",   T_OBJECT, offsetof(__pyx_PyAsyncGenObject, ag_frame),   READONLY},
+    {(char*) "ag_running", T_BOOL,   offsetof(__pyx_CoroutineObject, is_running), READONLY, NULL},
+    //REMOVED: {(char*) "ag_code",    T_OBJECT, offsetof(__pyx_PyAsyncGenObject, ag_code),    READONLY},
     //ADDED: "ag_await"
     {(char*) "ag_await", T_OBJECT, offsetof(__pyx_CoroutineObject, yieldfrom), READONLY,
      (char*) PyDoc_STR("object being awaited on, or None")},