Issue #22127: fix typo.
diff --git a/Modules/socketmodule.c b/Modules/socketmodule.c
index f87ebe0..829fd38 100644
--- a/Modules/socketmodule.c
+++ b/Modules/socketmodule.c
@@ -1263,7 +1263,7 @@
             return 0;
         }
         if (!PyBytes_Check(obj3)) {
-            Py_DECREF(obj2);
+            Py_DECREF(obj3);
             PyErr_SetString(PyExc_TypeError, "encoding of hostname failed to return bytes");
             return 0;
         }