[libgit2-glib] diff: remove useless cast

[Ignacio Casal Quinteiro <icq src gnome org>]

commit 0fabef9391867039282af26714815b0a1fe631ec
Author: Ignacio Casal Quinteiro <icq gnome org>
Date:   Wed Aug 17 15:43:33 2016 +0200

    diff: remove useless cast

 libgit2-glib/ggit-diff.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/libgit2-glib/ggit-diff.c b/libgit2-glib/ggit-diff.c
index 14323f7..0dd5f40 100644
--- a/libgit2-glib/ggit-diff.c
+++ b/libgit2-glib/ggit-diff.c
@@ -767,7 +767,7 @@ ggit_diff_get_delta (GgitDiff *diff,
 
        g_return_val_if_fail (GGIT_IS_DIFF (diff), NULL);
 
-       delta = git_diff_get_delta (_ggit_native_get (diff), (size_t)index);
+       delta = git_diff_get_delta (_ggit_native_get (diff), index);
 
        return _ggit_diff_delta_wrap (delta);
 }