glib: Fix cast from 'GTime *' (aka 'int *') to 'time_t *' (aka 'long *')

Sounds rather scary since we're storing a bigger value than what really
fits.

Fixed by the suggestion of https://developer.gnome.org/glib/stable/glib-Date-and-Time-Functions.html#GTime

Changing the type of _PopplerAttachment ctime/mtime would change the
structure size, thus break the BC, so leaving that for the future for
now
1 file changed