creat08: fall back to nogroup if nobody unavailable.

Partially revert commit 87bc45c477f1dc9114ec3bceab05693de8b07180
which assumes nobody is always available when doing getgrnam.
Patch give chance to fall back to using nogroup instead.

Signed-off-by: Salvatore Cro <salvatore.cro@st.com>
Signed-off-by: Cyril Hrubis <chrubis@suse.cz>
1 file changed