[gnumeric] .gnumeric: fix crash with corrupted file.

[Morten Welinder <mortenw src gnome org>]

commit 355e9e6683e2ca96c591f2d802c9fe4a5716c41d
Author: Morten Welinder <terra gnome org>
Date:   Wed Jun 19 11:38:59 2013 -0400

    .gnumeric: fix crash with corrupted file.

 NEWS               |    2 +-
 src/xml-sax-read.c |   17 ++++++++++-------
 2 files changed, 11 insertions(+), 8 deletions(-)
---
diff --git a/NEWS b/NEWS
index 351843c..3e7c60b 100644
--- a/NEWS
+++ b/NEWS
@@ -64,7 +64,7 @@ Morten:
        * Fix xls/biff5 link export.  [#701604]
        * Workaround problems with automake 1.13.
        * Fix crashes on corrupted files.  [#702101] [#702182] [#702218]
-         [#702267] [#702277] [#702379]
+         [#702267] [#702277] [#702379] [#702658]
 
 --------------------------------------------------------------------------
 Gnumeric 1.12.2
diff --git a/src/xml-sax-read.c b/src/xml-sax-read.c
index cd49ad9..fbf60ff 100644
--- a/src/xml-sax-read.c
+++ b/src/xml-sax-read.c
@@ -2692,13 +2692,16 @@ xml_sax_named_expr_end (GsfXMLIn *xin, G_GNUC_UNUSED GsfXMLBlob *blob)
                                       NULL,
                                       TRUE,
                                       NULL);
-
-               state->delayed_names = g_list_prepend (state->delayed_names, state->sheet);
-               state->delayed_names = g_list_prepend (state->delayed_names, state->name.value);
-               state->name.value = NULL;
-               state->delayed_names = g_list_prepend (state->delayed_names, state->name.position);
-               state->name.position = NULL;
-               state->delayed_names = g_list_prepend (state->delayed_names, nexpr);
+               if (nexpr) {
+                       state->delayed_names = g_list_prepend (state->delayed_names, state->sheet);
+                       state->delayed_names = g_list_prepend (state->delayed_names, state->name.value);
+                       state->name.value = NULL;
+                       state->delayed_names = g_list_prepend (state->delayed_names, state->name.position);
+                       state->name.position = NULL;
+                       state->delayed_names = g_list_prepend (state->delayed_names, nexpr);
+               } else {
+                       g_warning ("Strangeness with defined name");
+               }
        }
 
        g_free (state->name.name);