gtk: fix several out argument annotations
authorEvan Nemerson <evan@nemerson.com>
Mon, 26 May 2014 16:37:13 +0000 (09:37 -0700)
committerEvan Nemerson <evan@nemerson.com>
Wed, 28 May 2014 04:10:33 +0000 (21:10 -0700)
commit9db729f5a6b992168400f818e3fde6ffafc7cc04
tree3750c32fa114b6f2bbbe4c8b5ad453790aafe39e
parenta77765f17229ee1d0ab93134b426bb2838179bac
gtk: fix several out argument annotations

These mostly just switch from allow-none to optional, nullable, or
both, as necessary.

https://bugzilla.gnome.org/show_bug.cgi?id=730745
gtk/deprecated/gtkstyle.c
gtk/gtktreeview.c
gtk/gtktreeviewcolumn.c