print_exception(): handle correctly PyObject_GetAttrString() failure

Bug found by the Clang Static Analyzer.

diff --git a/Python/pythonrun.c b/Python/pythonrun.c
index b55dc5b201669fd9317b1b6877ddb3f27a28db46..232d7befa02f6729d52ec429b08c3e7cb3fc3edc 100644 (file)
--- a/Python/pythonrun.c
+++ b/Python/pythonrun.c
@@ -1593,7 +1593,7 @@ print_exception(PyObject *f, PyObject *value)
         moduleName = PyObject_GetAttrString(type, "__module__");
         if (moduleName == NULL || !PyUnicode_Check(moduleName))
         {
-            Py_DECREF(moduleName);
+            Py_XDECREF(moduleName);
             err = PyFile_WriteString("<unknown>", f);
         }
         else {