[gnome-system-monitor] Add minimum width for columns to avoid disappearing (bgo#788327)

[Robert Roth <robertroth src gnome org>]

commit 74e50cd36aed53d471ff27d3144beaede338a88c
Author: Robert Roth <robert roth off gmail com>
Date:   Sat Feb 3 17:54:59 2018 +0200

    Add minimum width for columns to avoid disappearing (bgo#788327)

 src/legacy/treeview.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/src/legacy/treeview.c b/src/legacy/treeview.c
index ea9f64e..34f8734 100644
--- a/src/legacy/treeview.c
+++ b/src/legacy/treeview.c
@@ -173,6 +173,7 @@ gsm_tree_view_load_state (GsmTreeView *tree_view)
 
             key = g_strdup_printf ("col-%d-width", sort_id);
             gtk_tree_view_column_set_fixed_width (col, g_settings_get_int (priv->settings, key));
+            gtk_tree_view_column_set_min_width (col, 30);
             g_free (key);
 
             key = g_strdup_printf ("col-%d-visible", sort_id);