package/sslh: fix static build with pcre

Fix static build failure with sslh version 1.19b and above

Fixes:
 - http://autobuild.buildroot.org/results/a601824fc0c205a6a940e0f9f079ce2c39840605

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