Removed unintentional trailing spaces in non-external and non-generated C files.
diff --git a/Objects/classobject.c b/Objects/classobject.c
index 07cb639..5e8ac59 100644
--- a/Objects/classobject.c
+++ b/Objects/classobject.c
@@ -260,7 +260,7 @@
             PyErr_Clear();
         }
     }
-    
+
     if (funcname != NULL && !PyUnicode_Check(funcname)) {
         Py_DECREF(funcname);
         funcname = NULL;