From 8781daf6e6c2a80524d787110094584a28619f2a Mon Sep 17 00:00:00 2001
From: Aaron Gokaslan <aaronGokaslan@gmail.com>
Date: Wed, 12 Oct 2022 16:46:40 -0400
Subject: [PATCH] chore: Optimize iterator advance() call (#4237)

---
 include/pybind11/pytypes.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/pybind11/pytypes.h b/include/pybind11/pytypes.h
index 2e6b755ca..0dda48145 100644
--- a/include/pybind11/pytypes.h
+++ b/include/pybind11/pytypes.h
@@ -1382,7 +1382,7 @@ public:
 private:
     void advance() {
         value = reinterpret_steal<object>(PyIter_Next(m_ptr));
-        if (PyErr_Occurred()) {
+        if (value.ptr() == nullptr && PyErr_Occurred()) {
             throw error_already_set();
         }
     }