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-rw-r--r--Python/sysmodule.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/Python/sysmodule.c b/Python/sysmodule.c
index 509b819acb..4cb16585bc 100644
--- a/Python/sysmodule.c
+++ b/Python/sysmodule.c
@@ -204,7 +204,8 @@ initsys()
XDECREF(v);
dictinsert(sysdict, "modules", get_modules());
dictinsert(sysdict, "builtin_module_names",
- list_builtin_module_names());
+ v = list_builtin_module_names());
+ XDECREF(v);
if (err_occurred())
fatal("can't insert sys.* objects in sys dict");
}