[libgit2-glib] signature: return the right values

[Ignacio Casal Quinteiro <icq src gnome org>]

commit 1cb15b4f2fdb2c8360f74907669939e833447c27
Author: Ignacio Casal Quinteiro <icq gnome org>
Date:   Wed Oct 14 12:01:09 2015 +0200

    signature: return the right values

 libgit2-glib/ggit-signature.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/libgit2-glib/ggit-signature.c b/libgit2-glib/ggit-signature.c
index ac5fbd4..6027d81 100644
--- a/libgit2-glib/ggit-signature.c
+++ b/libgit2-glib/ggit-signature.c
@@ -335,7 +335,7 @@ ggit_signature_get_time (GgitSignature *signature)
        GTimeZone *tz;
        GDateTime *ret;
 
-       g_return_val_if_fail (GGIT_IS_SIGNATURE (signature), 0);
+       g_return_val_if_fail (GGIT_IS_SIGNATURE (signature), NULL);
 
        s = _ggit_native_get (signature);
 
@@ -365,7 +365,7 @@ ggit_signature_get_time_zone (GgitSignature *signature)
        gchar *time_zone_id;
        GTimeZone *time_zone;
 
-       g_return_val_if_fail (GGIT_IS_SIGNATURE (signature), 0);
+       g_return_val_if_fail (GGIT_IS_SIGNATURE (signature), NULL);
 
        s = _ggit_native_get (signature);