wpcap: Implement wsockinit.

dlls/wpcap/Makefile.in

 MODULE    = wpcap.dll
+DELAYIMPORTS = ws2_32
 EXTRALIBS = @LIBPCAP@
 
 C_SRCS = \

dlls/wpcap/wpcap.c

@@ -19,6 +19,7 @@
  */
 
 #include <pcap/pcap.h>
+#include "winsock2.h"
 #include "windef.h"
 #include "winbase.h"
 #include "wine/debug.h"
@@ -273,3 +274,11 @@ int CDECL wine_pcap_stats(pcap_t *p, struct pcap_stat *ps)
     TRACE("(%p %p)\n", p, ps);
     return pcap_stats(p, ps);
 }
+
+int CDECL wine_wsockinit(void)
+{
+    WSADATA wsadata;
+    TRACE("()\n");
+    if (WSAStartup(MAKEWORD(1,1), &wsadata)) return -1;
+    return 0;
+}

dlls/wpcap/wpcap.spec

@@ -75,4 +75,4 @@
 @ cdecl pcap_stats(ptr ptr) wine_pcap_stats
 @ stub pcap_stats_ex
 @ stub pcap_strerror
-@ stub wsockinit
+@ cdecl wsockinit() wine_wsockinit