function doesn't return a value, so don't use g_return_val_if_fail()

function doesn't return a value, so don't use g_return_val_if_fail()

Fri Jul  9 15:38:06 2004  Manish Singh  <yosh@gimp.org>

        * gdk-pixbuf-io.c (gdk_pixbuf_format_set_disabled): function doesn't
        return a value, so don't use g_return_val_if_fail()

        * gdk-pixbuf-scale.c (gdk_pixbuf_rotate_simple): initialize dest in
        the can't happen case, to quiet gcc.

        * io-tiff.c (tifflibversion): enclose in #if TIFFLIB_VERSION >=
        20031226.