busybox

bc: remove redundant strdup+free in zbc_parse_call()

function                                             old     new   delta
zbc_parse_name                                       527     482     -45
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-45)             Total: -45 bytes
   text	   data	    bss	    dec	    hex	filename
 981541	    485	   7296	 989322	  f188a	busybox_old
 981486	    485	   7296	 989267	  f1853	busybox_unstripped

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