[3.10] Remove trailing spaces (GH-28709)

diff --git a/Modules/_json.c b/Modules/_json.c
index e10f83c..6f68c1f 100644
--- a/Modules/_json.c
+++ b/Modules/_json.c
@@ -321,7 +321,7 @@ raise_errmsg(const char *msg, PyObject *s, Py_ssize_t end)
     if (decoder == NULL) {
         return;
     }
-    
+
     _Py_IDENTIFIER(JSONDecodeError);
     PyObject *JSONDecodeError = _PyObject_GetAttrId(decoder, &PyId_JSONDecodeError);
     Py_DECREF(decoder);