[gnumeric] XLS: Don't free object we don't own.

[Morten Welinder <mortenw src gnome org>]

commit cd362e60f45078c78cb68a7e52c999c3479e042c
Author: Morten Welinder <terra gnome org>
Date:   Wed Oct 29 17:02:33 2014 -0400

    XLS: Don't free object we don't own.

 plugins/excel/ChangeLog  |    4 ++++
 plugins/excel/ms-chart.c |    5 +----
 2 files changed, 5 insertions(+), 4 deletions(-)
---
diff --git a/plugins/excel/ChangeLog b/plugins/excel/ChangeLog
index 3750443..1f9ec8d 100644
--- a/plugins/excel/ChangeLog
+++ b/plugins/excel/ChangeLog
@@ -1,3 +1,7 @@
+2014-10-28  Morten Welinder  <terra gnome org>
+
+       * ms-chart.c (ms_excel_chart_read): Fix double free.
+
 2014-10-27  Jean Brefort  <jean brefort normalesup org>
 
        * xlsx-read-drawing.c (xlsx_axis_format): add some support for axis format.
diff --git a/plugins/excel/ms-chart.c b/plugins/excel/ms-chart.c
index 2017fa6..e7a15fa 100644
--- a/plugins/excel/ms-chart.c
+++ b/plugins/excel/ms-chart.c
@@ -3773,10 +3773,7 @@ ms_excel_chart_read (BiffQuery *q, MSContainer *container,
        ms_container_finalize (&state.container);
 
        if (state.error) {
-               if (state.graph) {
-                       g_object_unref (state.graph);
-                       state.graph = NULL;
-               }
+               state.graph = NULL;
                state.chart = NULL;
        }