[goffice] Minor cleanup.

[Morten Welinder <mortenw src gnome org>]

commit a66fc0ed929384cc5115a1cc2b3ca4f0fb04afef
Author: Morten Welinder <terra gnome org>
Date:   Sat Sep 26 16:36:35 2020 -0400

    Minor cleanup.

 ChangeLog                     |  1 +
 goffice/graph/gog-axis-line.c | 19 ++++++++++---------
 2 files changed, 11 insertions(+), 9 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index 8b279587..ae068b5a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -2,6 +2,7 @@
 
        * goffice/graph/gog-axis-line.c (gog_axis_line_update_ticks): Zero
        tick count when we dispose of ticks.  Fixes Gnumeric #524.
+       (gog_axis_line_discard_ticks): Factor this repeated segment out.
 
 2020-08-29  Morten Welinder  <terra gnome org>
 
diff --git a/goffice/graph/gog-axis-line.c b/goffice/graph/gog-axis-line.c
index d97a2680..d759bca1 100644
--- a/goffice/graph/gog-axis-line.c
+++ b/goffice/graph/gog-axis-line.c
@@ -2514,9 +2514,8 @@ axis_line_format_value (GogAxisLine *line, double val, GOString **str)
 }
 
 static void
-gog_axis_line_update_ticks (GogAxisLine *line)
+gog_axis_line_discard_ticks (GogAxisLine *line)
 {
-       GODataVector *pos, *labels;
        if (line->ticks != NULL) {
                unsigned i;
                for (i = 0; i < line->tick_nbr; i++)
@@ -2526,6 +2525,14 @@ gog_axis_line_update_ticks (GogAxisLine *line)
        }
        line->ticks = NULL;
        line->tick_nbr = 0;
+}
+
+static void
+gog_axis_line_update_ticks (GogAxisLine *line)
+{
+       GODataVector *pos, *labels;
+
+       gog_axis_line_discard_ticks (line);
        pos = GO_DATA_VECTOR (line->custom_ticks[0].data);
        labels = GO_DATA_VECTOR (line->custom_ticks[1].data);
        if (pos != NULL && go_data_has_value (GO_DATA (pos)) && go_data_is_varying_uniformly (GO_DATA (pos))) 
{
@@ -2670,13 +2677,7 @@ gog_axis_line_finalize (GObject *obj)
 {
        GogAxisLine *line = GOG_AXIS_LINE (obj);
 
-       if (line->ticks != NULL) {
-               unsigned i;
-               for (i = 0; i < line->tick_nbr; i++)
-                       go_string_unref (line->ticks[i].str);
-
-               g_free (line->ticks);
-       }
+       gog_axis_line_discard_ticks (line);
        go_format_unref (line->assigned_format);
        go_format_unref (line->format);