(M17N_OBJECT_UNREF): When freeed, set OBJECT to NULL.

diff --git a/src/internal.h b/src/internal.h
index 53eef54..3354e29 100644 (file)
--- a/src/internal.h
+++ b/src/internal.h
@@ -333,6 +333,7 @@ typedef struct
              (((M17NObject *) (object))->u.freer) (object);    \
            else                                                \
              free (object);                                    \
+           (object) = NULL;                                    \
          }                                                     \
       }                                                                \
   } while (0)