(tcp_connect, hostconnect) [_WIN32]: Replace close() with

closesocket() as Windows close() does not support closing
socket connections.

src/client/host.c

@@ -48,7 +48,7 @@
 #include <netdb.h>
 #include <unistd.h>
 #else
-#include <io.h>
+#include <winsock2.h>
 #endif
 #include "misc.h"
 
@@ -82,8 +82,11 @@ tcp_connect(char *host, char *serv)
 
 	if (connect(sockfd, res->ai_addr, res->ai_addrlen) == 0)
 	    break;		/* success */
-
+#ifdef _WIN32
+	closesocket(sockfd);	/* ignore this one */
+#else
 	close(sockfd);		/* ignore this one */
+#endif
     } while ((res = res->ai_next) != NULL);
 
     if (res == NULL) {		/* errno set from final connect() */
@@ -152,8 +155,10 @@ hostconnect(struct sockaddr_in *addr)
     if (connect(s, (struct sockaddr *)addr, sizeof(*addr)) < 0) {
 #ifdef _WIN32
 	errno = WSAGetLastError();
-#endif
+	(void)closesocket(s);
+#else
 	(void)close(s);
+#endif
 	return -1;
     }
     return s;