8079841: Buffer underflow with empty zip entry names
Summary: check for zero-length entry name before accessing "last" byte
Reviewed-by: sherman, martin
os_family = linux
arch = x86
arch_model = x86_64
os_arch = linux_x86
os_arch_model = linux_x86_64
lib_arch = amd64
compiler = sparcWorks
gnu_dis_arch = amd64
sysdefs = -DLINUX -DSPARC_WORKS -D_GNU_SOURCE -DAMD64