sysctl: add -e: supress warnings about invalid key (Jeremy Kerr <jk@ozlabs.org>)
code shrink:

   text    data     bss     dec     hex filename
 775565     929    9100  785594   bfcba busybox_old
 775296     929    9100  785325   bfbad busybox_unstripped

2 files changed