[2.7] bpo-38175: Fix a memory leak in comparison of sqlite3.Row objects. (GH-16155). (GH-16215)

(cherry picked from commit 8debfa50407107ff2329d01081cdc12d359f1d12)

1 files changed, 7 insertions, 5 deletions

diff --git a/Modules/_sqlite/row.c b/Modules/_sqlite/row.c
index 9ebe7b7..c0da329 100644
--- a/Modules/_sqlite/row.c
+++ b/Modules/_sqlite/row.c
@@ -199,14 +199,16 @@ static PyObject* pysqlite_row_richcompare(pysqlite_Row *self, PyObject *_other,
         Py_INCREF(Py_NotImplemented);
         return Py_NotImplemented;
     }
-    if (PyType_IsSubtype(Py_TYPE(_other), &pysqlite_RowType)) {
+    if (PyObject_TypeCheck(_other, &pysqlite_RowType)) {
         pysqlite_Row *other = (pysqlite_Row *)_other;
-        PyObject *res = PyObject_RichCompare(self->description, other->description, opid);
-        if ((opid == Py_EQ && res == Py_True)
-            || (opid == Py_NE && res == Py_False)) {
-            Py_DECREF(res);
+        int eq = PyObject_RichCompareBool(self->description, other->description, Py_EQ);
+        if (eq < 0) {
+            return NULL;
+        }
+        if (eq) {
             return PyObject_RichCompare(self->data, other->data, opid);
         }
+        return PyBool_FromLong(opid != Py_EQ);
     }
     Py_INCREF(Py_NotImplemented);
     return Py_NotImplemented;