https://bugzilla.redhat.com/show_bug.cgi?id=1612860

fix build with libpcap 1.9.0

diff -up ./Makefile.PL.tv ./Makefile.PL

--- ./Makefile.PL.tv	2018-09-21 10:32:09.165570705 +0200

+++ ./Makefile.PL	2018-09-21 10:45:39.096591301 +0200

@@ -106,7 +106,7 @@ REASON

 # We also store the list of available functions in a file for skipping the 

 # corresponding tests. 

 my @funcs = have_functions(find_functions());

-$options{DEFINE} .= cpp_defines(@funcs);

+$options{DEFINE} .= cpp_defines(@funcs). "-DHAVE_PCAP_SETSAMPLING";

 open(FUNCS, '>funcs.txt') or warn "warning: can't write 'funcs.txt': $!\n";

 print FUNCS join("\n", @funcs), "\n";

 close(FUNCS);

diff -up ./Pcap.xs.tv ./Pcap.xs

diff -up ./stubs.inc.tv ./stubs.inc

--- ./stubs.inc.tv	2018-09-21 10:30:08.653034412 +0200

+++ ./stubs.inc	2018-09-21 10:46:41.339897943 +0200

@@ -354,11 +354,6 @@ int pcap_parsesrcstr(const char *source,

 #ifdef _MSC_VER

 #pragma message( "Warning: the function pcap_open() is not available" )

 #endif

-struct pcap_rmtauth {

-    int type;

-    char *username;

-    char *password;

-};

 pcap_t * pcap_open(const char *source, int snaplen, int flags, int read_timeout, struct pcap_rmtauth *auth, char *err);

 pcap_t * pcap_open(const char *source, int snaplen, int flags, int read_timeout, struct pcap_rmtauth *auth, char *err) {

@@ -511,6 +511,7 @@ HANDLE pcap_getevent(pcap_t *p) {

 #ifdef _MSC_VER

 #pragma message( "Warning: the function pcap_setsampling() is not available" )

 #endif

+#if 0

 struct pcap_samp {

     int method;

     int value;

@@ -522,6 +523,7 @@ struct pcap_samp *pcap_setsampling(pcap_

     return NULL;

 }

 #endif

+#endif

 /*