[gnumeric] Quit: fix 2038 problem.

[Morten Welinder <mortenw src gnome org>]

commit 0ca0e46d61b2e0dc5c75f35289ef06d0129a254b
Author: Morten Welinder <terra gnome org>
Date:   Fri Jun 26 12:49:54 2020 -0400

    Quit: fix 2038 problem.
    
    18 years to spare...  We were stuffing a time_t into an int.

 NEWS                      | 1 +
 src/dialogs/dialog-quit.c | 6 +++---
 2 files changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/NEWS b/NEWS
index 44b2d609e..9b0168d2f 100644
--- a/NEWS
+++ b/NEWS
@@ -19,6 +19,7 @@ Morten:
        * Fix ssconvert --merge-to problem.  [#496]
        * Fix sheet size paste problem.  [#497]
        * Speed up really large auto-filters.  [#465]
+       * Fix 2038 problem on quit.
 
 --------------------------------------------------------------------------
 Gnumeric 1.12.47
diff --git a/src/dialogs/dialog-quit.c b/src/dialogs/dialog-quit.c
index e36a03d30..640a220e2 100644
--- a/src/dialogs/dialog-quit.c
+++ b/src/dialogs/dialog-quit.c
@@ -105,7 +105,7 @@ age_renderer_func (GtkTreeViewColumn *tree_column,
        g_return_if_fail (GO_IS_DOC (doc));
 
        if (go_doc_is_dirty (doc)) {
-               int quitting_time = GPOINTER_TO_INT
+               time_t quitting_time = GPOINTER_TO_SIZE
                        (g_object_get_data (G_OBJECT (tree_column),
                                            "quitting_time"));
                int age = quitting_time -
@@ -244,7 +244,7 @@ show_quit_dialog (GList *dirty, WBCGtk *wbcg)
        int res;
        gboolean quit;
        GObject *age_column;
-       int quitting_time = g_get_real_time () / 1000000;
+       time_t quitting_time = g_get_real_time () / 1000000;
 
        gui = gnm_gtk_builder_load ("res:ui/quit.ui", NULL, GO_CMD_CONTEXT (wbcg));
         if (gui == NULL)
@@ -296,7 +296,7 @@ show_quit_dialog (GList *dirty, WBCGtk *wbcg)
 
        age_column = gtk_builder_get_object (gui, "age_column");
        g_object_set_data (age_column, "quitting_time",
-                          GINT_TO_POINTER (quitting_time));
+                          GSIZE_TO_POINTER (quitting_time));
        gtk_tree_view_column_set_cell_data_func
                (GTK_TREE_VIEW_COLUMN (age_column),
                 GTK_CELL_RENDERER (gtk_builder_get_object (gui, "age_renderer")),