[libgit2-glib] Fix g_return with return value

[Jesse van den Kieboom <jessevdk src gnome org>]

commit 30684d6ee695095e0f164ce0ba3c03f15d847f6f
Author: Jesse van den Kieboom <jessevdk gmail com>
Date:   Fri Nov 22 19:25:19 2013 +0100

    Fix g_return with return value

 libgit2-glib/ggit-patch.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/libgit2-glib/ggit-patch.c b/libgit2-glib/ggit-patch.c
index 127c5ba..34821f8 100644
--- a/libgit2-glib/ggit-patch.c
+++ b/libgit2-glib/ggit-patch.c
@@ -144,7 +144,7 @@ ggit_patch_new_from_blobs (GgitBlob         *old_blob,
        const git_diff_options *gdiff_options;
        git_patch *patch;
 
-       g_return_if_fail (error == NULL || *error == NULL);
+       g_return_val_if_fail (error == NULL || *error == NULL, NULL);
 
        gdiff_options = _ggit_diff_options_get_diff_options (diff_options);