Use the appropriate version for unavailable annotations
Use the appropriate version for unavailable annotations

A copy and paste thinko on the GDK_PIXBUF_UNAVAILABLE_IN_* macros after
2.22 generated the exact same warning for all releases after that.

This commit introduces no functional change, only an updated compiler
warning with the correct version numbers.

GNOME/gdk-pixbuf,GNOME/gdk-pixbuf,GNOME/gdk-pixbuf,GNOME/gdk-pixbuf