GObjectIntrospection.xs: fix spelling of two internal functions
GObjectIntrospection.xs: fix spelling of two internal functions

cpanxaoc/perl-Glib-Object-Introspection,GNOME/perl-Glib-Object-Introspection,GNOME/perl-Glib-Object-Introspection,cpanxaoc/perl-Glib-Object-Introspection