[gnumeric] Compilation: NULL/FALSE mixup.

[Morten Welinder <mortenw src gnome org>]

commit 7eda50301291d5a47a217f27bc35df56a2d924c9
Author: Morten Welinder <terra gnome org>
Date:   Mon Mar 20 19:55:00 2017 -0400

    Compilation: NULL/FALSE mixup.

 src/hlink.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/hlink.c b/src/hlink.c
index 6d6bdee..01fd96d 100644
--- a/src/hlink.c
+++ b/src/hlink.c
@@ -238,8 +238,8 @@ gnm_hlink_dup (GnmHLink *lnk)
 gboolean
 gnm_hlink_equal (GnmHLink const *a, GnmHLink const *b, gboolean relax_sheet)
 {
-       g_return_val_if_fail (GNM_IS_HLINK (a), NULL);
-       g_return_val_if_fail (GNM_IS_HLINK (b), NULL);
+       g_return_val_if_fail (GNM_IS_HLINK (a), FALSE);
+       g_return_val_if_fail (GNM_IS_HLINK (b), FALSE);
 
        if (a == b)
                return TRUE;