package/keepalived: fix build with -Os

Fixes:
 - http://autobuild.buildroot.org/results/955aef1c25b977d6697fdf8cd1e710f40c7e60a3

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2 files changed