Fix blank lines

Author: okiemute04

Lib/test/test_json/test_recursion.py

@@ -6,6 +6,7 @@
 
 class JSONTestObject:
     pass
+
 class TestRecursion:
     def test_listrecursion(self):
         x = []
@@ -145,5 +146,6 @@ def default(obj):
         for i, ref in enumerate(weak_refs):
             self.assertIsNone(ref(), f"object {i} still alive")
 
+
 class TestPyRecursion(TestRecursion, PyTest): pass
 class TestCRecursion(TestRecursion, CTest): pass

Modules/_json.c

@@ -1639,14 +1639,18 @@ encoder_listencode_obj(PyEncoderObject *s, PyUnicodeWriter *writer,
                     Py_DECREF(newobj);
                     return -1;
                 }
+
             }
+
             Py_DECREF(newobj);
             return -1;
         }
         rv = encoder_listencode_obj(s, writer, newobj, indent_level, indent_cache);
         _Py_LeaveRecursiveCall();
+
         Py_DECREF(newobj);
         if (rv) {
+            _PyErr_FormatNote("when serializing %T object", obj);
             if (ident != NULL) {
                 int del_rv = PyDict_DelItem(s->markers, ident);
                 Py_DECREF(ident);