[goffice] Fix ring plot center size persistence. [#395]

[Jean Bréfort <jbrefort src gnome org>]

commit d80d7e17a42093433e26dcb5bd3daac54a6a2b45
Author: Jean Brefort <jean brefort normalesup org>
Date:   Fri Apr 5 11:19:16 2019 +0200

    Fix ring plot center size persistence. [#395]

 ChangeLog                  | 5 +++++
 NEWS                       | 1 +
 plugins/plot_pie/gog-pie.c | 2 +-
 3 files changed, 7 insertions(+), 1 deletion(-)
---
diff --git a/ChangeLog b/ChangeLog
index ad8b4a1c..14b5dd17 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2019-04-05  Jean Brefort  <jean brefort normalesup org>
+
+       * plugins/plot_pie/gog-pie.c (gog_ring_plot_class_init): fix ring plot
+       center size persistence. [#395]
+
 2019-01-15  Jean Brefort  <jean brefort normalesup org>
 
        * plugins/smoothing/gog-exp-smooth.c (gog_exp_smooth_update): protect
diff --git a/NEWS b/NEWS
index 3cfea871..3d2c5adb 100644
--- a/NEWS
+++ b/NEWS
@@ -2,6 +2,7 @@ goffice 0.10.45:
 
 Jean:
        * Fix crash in exponential smoothing with invalid y data. [#377]
+       * Fix ring plot center size persistence. [#395]
 
 Morten:
        * Introspection fixes.
diff --git a/plugins/plot_pie/gog-pie.c b/plugins/plot_pie/gog-pie.c
index 3bacb7b5..5c4edaca 100644
--- a/plugins/plot_pie/gog-pie.c
+++ b/plugins/plot_pie/gog-pie.c
@@ -464,7 +464,7 @@ gog_ring_plot_class_init (GogPiePlotClass *pie_plot_klass)
                g_param_spec_double ("center-size",
                        _("Center-size"),
                        _("Size of the center hole as a percentage of the radius"),
-                       0, 100., 0.,
+                       0, 100., 0.5,
                        GSF_PARAM_STATIC | G_PARAM_READWRITE | GO_PARAM_PERSISTENT));
 
        plot_klass->desc.num_series_max = G_MAXINT;