Apply SF patch #424554: check for PYTHONDUMPREFS to be set instead of
asking to print the references.
diff --git a/Python/pythonrun.c b/Python/pythonrun.c
index cf2c777..69a7b51 100644
--- a/Python/pythonrun.c
+++ b/Python/pythonrun.c
@@ -230,11 +230,7 @@
 #endif
 
 #ifdef Py_TRACE_REFS
-	if (
-#ifdef MS_WINDOWS /* Only ask on Windows if env var set */
-	    Py_GETENV("PYTHONDUMPREFS") &&
-#endif /* MS_WINDOWS */
-	    _Py_AskYesNo("Print left references?")) {
+	if (Py_GETENV("PYTHONDUMPREFS")) {
 		_Py_PrintReferences(stderr);
 	}
 #endif /* Py_TRACE_REFS */