package/x11vnc: fix build with 64 bits time_t

Fixes:
 - http://autobuild.buildroot.org/results/75e45b566c85d19c5ed00529d036b4808413b1ca

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit 8ec0b8f86ad52403418dcbc66053175ab79fc21e)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
1 file changed