Bug#840421: mate-panel: logs error in .xsession-errors

[Francesco Potortì]

>> Package: mate-panel
>> Version: 1.16.0-1
>> Severity: minor
>>
>> When mate-panel is restarted, it logs these to ~/.xsession-errors:
>>
>> (mate-panel:25830): Gtk-WARNING **: Allocating size to GtkAlignment 0x559f4d8fcdc0 without calling gtk_widget_get_preferred_width/height(). How does the code know the size to allocate?
...
>> (mate-settings-daemon:6649): Gtk-WARNING **: gtk_widget_size_allocate(): attempt to underallocate toplevel GtkTrayIcon 0x55f60a868f30. Allocation is 1x1, but minimum required size is 30x24.
...
>> (mate-settings-daemon:6649): Gtk-WARNING **: gtk_widget_size_allocate(): attempt to allocate widget with width -5 and height 1
...
>> (mate-panel:25830): GLib-GObject-CRITICAL **: g_object_unref: assertion 'G_IS_OBJECT (object)' failed
...
>> (mate-panel:25830): Gtk-WARNING **: Allocating size to PanelToplevel 0x559f4d61eff0 without calling gtk_widget_get_preferred_width/height(). How does the code know the size to allocate?

>
>Another of your bugs? Please check, if still an issue. And if not:  
>please close.

THis is gone, thanks.  However, during yesterday's daily upgrade I got these:

Jan 23 13:46:22 tucano kernel: [5786259.805488] mate-panel[29891]: segfault at 4 ip 00007f131abf2590 sp 00007ffcffa48438 error 4 in libgtk-3.so.0.2200.6[7f131a9e7000+6fe000]
Jan 23 13:47:19 tucano kernel: [5786316.515064] mate-panel[2590]: segfault at 4 ip 00007fe89be63590 sp 00007fff56ee6988 error 4 in libgtk-3.so.0.2200.6[7fe89bc58000+6fe000]
Jan 23 13:47:51 tucano kernel: [5786348.635206] mate-panel[2941]: segfault at 4 ip 00007fbcdd653590 sp 00007fff4f094508 error 4 in libgtk-3.so.0.2200.6[7fbcdd448000+6fe000]
Jan 23 13:48:23 tucano kernel: [5786381.012151] mate-panel[3106]: segfault at 4 ip 00007f28c8831590 sp 00007fff3537f188 error 4 in libgtk-3.so.0.2200.6[7f28c8626000+6fe000]
Jan 23 13:52:33 tucano kernel: [5786630.562669] mate-panel[3297]: segfault at 4 ip 00007f6297eaa590 sp 00007ffc7ef8a608 error 4 in libgtk-3.so.0.2200.6[7f6297c9f000+6fe000]
Jan 23 13:52:37 tucano kernel: [5786635.134796] mate-panel[6234]: segfault at 4 ip 00007fa30b128590 sp 00007ffd6654f538 error 4 in libgtk-3.so.0.2200.6[7fa30af1d000+6fe000]

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