GtkDialog: Reduce a g_warning to a g_message
GtkDialog: Reduce a g_warning to a g_message

Otherwise, this breaks our testsuite.

jessevdk/gtk,alexlarsson/gtk,jadahl/gtk,jigpu/gtk,ahodesuka/gtk,chergert/gtk,chergert/gtk,Lyude/gtk-,jessevdk/gtk,jadahl/gtk,Adamovskiy/gtk,davidgumberg/gtk,grubersjoe/adwaita,jadahl/gtk,chergert/gtk,jigpu/gtk,Sidnioulz/SandboxGtk,alexlarsson/gtk,jigpu/gtk,grubersjoe/adwaita,Adamovskiy/gtk,Sidnioulz/SandboxGtk,jessevdk/gtk,alexlarsson/gtk,ahodesuka/gtk,jadahl/gtk,Sidnioulz/SandboxGtk,Sidnioulz/SandboxGtk,jessevdk/gtk,Lyude/gtk-,jessevdk/gtk,Lyude/gtk-,jigpu/gtk,jigpu/gtk,Lyude/gtk-,davidgumberg/gtk,Sidnioulz/SandboxGtk,jigpu/gtk,alexlarsson/gtk,ahodesuka/gtk,Sidnioulz/SandboxGtk,chergert/gtk,chergert/gtk,grubersjoe/adwaita,alexlarsson/gtk,ahodesuka/gtk,jessevdk/gtk,chergert/gtk,davidgumberg/gtk,jigpu/gtk,Adamovskiy/gtk,grubersjoe/adwaita,jadahl/gtk,grubersjoe/adwaita,Lyude/gtk-,davidgumberg/gtk,grubersjoe/adwaita,jigpu/gtk,chergert/gtk,jadahl/gtk,grubersjoe/adwaita,grubersjoe/adwaita,Adamovskiy/gtk,Adamovskiy/gtk,davidgumberg/gtk,chergert/gtk,Adamovskiy/gtk,jadahl/gtk,ahodesuka/gtk,ahodesuka/gtk,Adamovskiy/gtk,ahodesuka/gtk,alexlarsson/gtk,davidgumberg/gtk,Lyude/gtk-,alexlarsson/gtk,Lyude/gtk-,ahodesuka/gtk,alexlarsson/gtk,jessevdk/gtk,jadahl/gtk,davidgumberg/gtk,Lyude/gtk-,Adamovskiy/gtk,davidgumberg/gtk