volume_id/get_devname: trivial code shrink

function                                             old     new   delta
uuidcache_init                                        36      41      +5
get_devname_from_uuid                                 55      51      -4
get_devname_from_label                                61      57      -4
display_uuid_cache                                   109     105      -4
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(add/remove: 0/0 grow/shrink: 1/3 up/down: 5/-12)              Total: -7 bytes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
1 file changed