[MacPorts] #24948: gtk2 2.20.1: add patch from upstream GTK+ bug 616851

[MacPorts]

#24948: gtk2 2.20.1: add patch from upstream GTK+ bug 616851
------------------------------------------+---------------------------------
 Reporter:  suv-sf@…                      |       Owner:  macports-tickets@…                   
     Type:  defect                        |      Status:  new                                  
 Priority:  Normal                        |   Milestone:                                       
Component:  ports                         |     Version:  1.8.2                                
 Keywords:                                |        Port:  gtk2                                 
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 Running Inkscape with gtk2 @2.20.1 produces a lot of these console
 messages:

 {{{
 (inkscape-bin:97675): Gtk-CRITICAL **: gtk_misc_set_alignment: assertion
 `GTK_IS_MISC (misc)' failed
 }}}

 Applying the patch mentioned in comment #11 of upstream Gnome/GTK+
 [https://bugzilla.gnome.org/show_bug.cgi?id=616851 Bug 616851 - Gtk-
 CRITICAL **: gtk_misc_set_alignment: assertion `GTK_IS_MISC (misc)'
 failed] solves the issue.

 See also [https://bugs.launchpad.net/inkscape/+bug/576852 Bug #576852 in
 Inkscape].

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Ticket URL: <http://trac.macports.org/ticket/24948>
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