kern/124723: Typo in error message in ggated.c

[Oleksandr Tymoshenko]

Garrett Cooper wrote:
>  That error message (IMO) is in and of itself misleading.
>  
>  strerror(errno) with g_gate_xlog(...) would be a more suitable means
>  of denoting the error encountered.
     No point in strerror. Both malloc and strdup set errno only to ENOMEM.
Committed as is.

-- 
gonzo