bpo-28914: Fix compilation of select on Android (#5447)

EPOLL_CLOEXEC is not defined on Android.

Co-Authored-By: Wataru Matsumoto <sxsns243@gmail.com>
diff --git a/Modules/selectmodule.c b/Modules/selectmodule.c
index f2f5cc8..3b7713a 100644
--- a/Modules/selectmodule.c
+++ b/Modules/selectmodule.c
@@ -1307,10 +1307,13 @@
         PyErr_SetString(PyExc_ValueError, "negative sizehint");
         return NULL;
     }
+
+#ifdef HAVE_EPOLL_CREATE1
     if (flags && flags != EPOLL_CLOEXEC) {
         PyErr_SetString(PyExc_OSError, "invalid flags");
         return NULL;
     }
+#endif
 
     return newPyEpoll_Object(type, sizehint, -1);
 }