[libgit2-glib] blame-options: avoid possible null deferences

[Ignacio Casal Quinteiro <icq src gnome org>]

commit 1e873f4e022675e8a84d93e10615497854bf2e5c
Author: Ignacio Casal Quinteiro <icq gnome org>
Date:   Fri Aug 5 10:41:45 2016 +0200

    blame-options: avoid possible null deferences

 libgit2-glib/ggit-blame-options.c |   12 ++++++++----
 1 files changed, 8 insertions(+), 4 deletions(-)
---
diff --git a/libgit2-glib/ggit-blame-options.c b/libgit2-glib/ggit-blame-options.c
index 45b1ef9..d351208 100644
--- a/libgit2-glib/ggit-blame-options.c
+++ b/libgit2-glib/ggit-blame-options.c
@@ -175,8 +175,10 @@ ggit_blame_options_set_newest_commit (GgitBlameOptions *blame_options,
        {
                blame_options->blame_options.newest_commit = zero;
        }
-
-       blame_options->blame_options.newest_commit = *_ggit_oid_get_oid (oid);
+       else
+       {
+               blame_options->blame_options.newest_commit = *_ggit_oid_get_oid (oid);
+       }
 }
 
 /**
@@ -224,8 +226,10 @@ ggit_blame_options_set_oldest_commit (GgitBlameOptions *blame_options,
        {
                blame_options->blame_options.oldest_commit = zero;
        }
-
-       blame_options->blame_options.oldest_commit = *_ggit_oid_get_oid (oid);
+       else
+       {
+               blame_options->blame_options.oldest_commit = *_ggit_oid_get_oid (oid);
+       }
 }
 
 /**