libpcap: bump to version 1.5.1

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/libpcap/libpcap.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-LIBPCAP_VERSION = 1.4.0
+LIBPCAP_VERSION = 1.5.1
 LIBPCAP_SITE = http://www.tcpdump.org/release
 LIBPCAP_LICENSE = BSD-3c
 LIBPCAP_LICENSE_FILES = LICENSE