package/olsr: fix build of pud plugin

Fix build of pud plugin which was added with commit
318d160fe5b080e421dc133dff82d5ea2cf7d893

Fixes:
 - http://autobuild.buildroot.org/results/5b598d728e6aae61b295681b0d7777e83074fecd

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
1 file changed