libpcap: bump to version 1.7.4

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/libpcap/libpcap.hash

@@ -1,2 +1,2 @@
 # Locally calculated after checking pgp signature
-sha256	dd9f85213dc8e948068405b55dd20f8b32e3083e9e0e186f833bd0372e559e2f	libpcap-1.7.3.tar.gz
+sha256	7ad3112187e88328b85e46dce7a9b949632af18ee74d97ffc3f2b41fe7f448b0	libpcap-1.7.4.tar.gz

package/libpcap/libpcap.mk

@@ -4,7 +4,7 @@
 #
 ################################################################################
 
-LIBPCAP_VERSION = 1.7.3
+LIBPCAP_VERSION = 1.7.4
 LIBPCAP_SITE = http://www.tcpdump.org/release
 LIBPCAP_LICENSE = BSD-3c
 LIBPCAP_LICENSE_FILES = LICENSE