Don't call suser_cred() directly from linux_sethostname(), as it just wraps userland_sysctl(), which performs necessary privilege checks as part of its normal operation.
Don't call suser_cred() directly from linux_sethostname(), as it just
wraps userland_sysctl(), which performs necessary privilege checks as
part of its normal operation.

MFC after:	1 week

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase