libunarchive: clean up dirty hacks. code shrank as a result
function old new delta
cpio_main 526 539 +13
init_handle 57 58 +1
init_archive_deb_ar 34 35 +1
get_header_ar 408 409 +1
dpkg_main 3900 3901 +1
unpack_package 516 515 -1
rpm_main 1673 1672 -1
tar_main 774 767 -7
get_header_cpio 990 972 -18
data_extract_all 750 727 -23
get_header_tar 1631 1576 -55
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(add/remove: 0/0 grow/shrink: 5/6 up/down: 17/-105) Total: -88 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>