[gspell] News file: add news for 1.2.3

[Sébastien Wilmet <swilmet src gnome org>]

commit 5f74fdca93a2a4bc5551f59d3d346558b0919643
Author: Sébastien Wilmet <swilmet gnome org>
Date:   Fri Feb 24 13:28:36 2017 +0100

    News file: add news for 1.2.3

 NEWS |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/NEWS b/NEWS
index 9c2212b..eb36be8 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,10 @@
+News in 1.2.3, 2017-02-24
+-------------------------
+* Replace a g_assert_cmpint() by a g_return_if_fail(), to avoid a crash. The
+  assertion sometimes fails, probably because of a bug in a lower-level
+  library.
+  https://bugzilla.gnome.org/show_bug.cgi?id=778883
+
 News in 1.3.2, 2017-01-15
 -------------------------
 This is an unstable release in the 1.3 development cycle. The 1.4 stable