sysctl: do report EACCES errors on write

function                                             old     new   delta
sysctl_act_recursive                                 165     179     +14
sysctl_act_on_setting                                467     471      +4
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(add/remove: 0/0 grow/shrink: 2/0 up/down: 18/0)               Total: 18 bytes

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