[libgit2-glib] ggit-blame-options.c: Fix return annotations

[Igor Gnatenko <ignatenko src gnome org>]

commit e139299cf00cc1c6439c83e6e3627b03dfa35cde
Author: Brian C. Lane <bcl redhat com>
Date:   Wed Aug 30 15:34:55 2017 -0700

    ggit-blame-options.c: Fix return annotations
    
    Add (nullable) as needed.

 libgit2-glib/ggit-blame-options.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/libgit2-glib/ggit-blame-options.c b/libgit2-glib/ggit-blame-options.c
index d351208..f459db7 100644
--- a/libgit2-glib/ggit-blame-options.c
+++ b/libgit2-glib/ggit-blame-options.c
@@ -49,7 +49,7 @@ _ggit_blame_options_get_blame_options (GgitBlameOptions *blame_options)
  *
  * Copies @blame_options into a newly allocated #GgitBlameOptions.
  *
- * Returns: (transfer full): a newly allocated #GgitBlameOptions.
+ * Returns: (transfer full) (nullable): a newly allocated #GgitBlameOptions or %NULL.
  */
 GgitBlameOptions *
 ggit_blame_options_copy (GgitBlameOptions *blame_options)
@@ -138,7 +138,7 @@ ggit_blame_set_flags (GgitBlameOptions *blame_options,
  * Get the id of the newest commit to consider in the blame. The default
  * value of %NULL indicates to use HEAD.
  *
- * Returns: (transfer full): a #GgitOId or %NULL.
+ * Returns: (transfer full) (nullable): a #GgitOId or %NULL.
  *
  **/
 GgitOId *
@@ -188,7 +188,7 @@ ggit_blame_options_set_newest_commit (GgitBlameOptions *blame_options,
  * Get the id of the oldest commit to consider in the blame. Teh default value
  * of %NULL indicates to used HEAD.
  *
- * Returns: (transfer full): a #GgitOId.
+ * Returns: (transfer full) (nullable): a #GgitOId or %NULL.
  *
  **/
 GgitOId *