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

[Igor Gnatenko <ignatenko src gnome org>]

commit 6f549cc208a32539c957b13eb5735d12c0768a68
Author: Brian C. Lane <bcl redhat com>
Date:   Wed Aug 30 17:20:16 2017 -0700

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

 libgit2-glib/ggit-rebase.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/libgit2-glib/ggit-rebase.c b/libgit2-glib/ggit-rebase.c
index d0a8e30..c9be27f 100644
--- a/libgit2-glib/ggit-rebase.c
+++ b/libgit2-glib/ggit-rebase.c
@@ -106,7 +106,7 @@ ggit_rebase_get_operation_index (GgitRebase *rebase)
  *
  * Gets the rebase operation specified by @idx.
  *
- * Returns: The rebase operation or %NULL if @idx was out of bounds.
+ * Returns: (transfer full) (nullable): The rebase operation or %NULL if @idx was out of bounds.
  */
 GgitRebaseOperation *
 ggit_rebase_get_operation_by_index (GgitRebase *rebase,
@@ -132,7 +132,7 @@ ggit_rebase_get_operation_by_index (GgitRebase *rebase,
  * working directory will be updated with the changes. If there are conflicts,
  * you will need to address those before committing the changes.
  *
- * Returns: (transfer full): the rebase operation that is to be performed next.
+ * Returns: (transfer full) (nullable): the rebase operation that is to be performed next or %NULL.
  */
 GgitRebaseOperation *
 ggit_rebase_next (GgitRebase  *rebase,
@@ -170,7 +170,7 @@ ggit_rebase_next (GgitRebase  *rebase,
  * were introduced during the patch application from the ggit_rebase_next()
  * invocation.
  *
- * Returns: (transfer full): a #GgitOId of the newly created commit.
+ * Returns: (transfer full) (nullable): a #GgitOId of the newly created commit or %NULL.
  */
 GgitOId *
 ggit_rebase_commit (GgitRebase     *rebase,