bpo-38962: Fix reference leak in new_interpreter() (GH-17453)

https://bugs.python.org/issue38962

Automerge-Triggered-By: @pablogsal

diff --git a/Python/pylifecycle.c b/Python/pylifecycle.c
index cce4783bc12c31bab7b3012601923ec14f3e622e..9218978cc6fa7d545c80534d005ce8c5dabeec8f 100644 (file)
--- a/Python/pylifecycle.c
+++ b/Python/pylifecycle.c
@@ -648,9 +648,11 @@ pycore_init_builtins(PyThreadState *tstate)
     if (interp->builtins_copy == NULL) {
         goto error;
     }
+    Py_DECREF(bimod);
     return _PyStatus_OK();
 
 error:
+    Py_XDECREF(bimod);
     return _PyStatus_ERR("can't initialize builtins module");
 }