gtkpapersize: Reformat #if preprocessor commands
gtkpapersize: Reformat #if preprocessor commands

This eliminates some false positive warnings from scan-build, which was
not interpreting the #ifs and hence warning about unbalanced #endifs.

https://bugzilla.gnome.org/show_bug.cgi?id=712760

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