windows: Don't use function macros to overload send/recv() and friends

While the macro versions would not catch non-function invocations, we actually
have to use catch all to support the sender_t.send() function.

src/libstrongswan/utils/windows.h

@@ -267,26 +267,26 @@ int socketpair(int domain, int type, int protocol, int sv[2]);
 /**
  * recv(2) with support for MSG_DONTWAIT
  */
-#define recv(...) windows_recv(__VA_ARGS__)
+#define recv windows_recv
 ssize_t windows_recv(int sockfd, void *buf, size_t len, int flags);
 
 /**
  * recvfrom(2) with support for MSG_DONTWAIT
  */
-#define recvfrom(...) windows_recvfrom(__VA_ARGS__)
+#define recvfrom windows_recvfrom
 ssize_t windows_recvfrom(int sockfd, void *buf, size_t len, int flags,
 						 struct sockaddr *src_addr, socklen_t *addrlen);
 
 /**
  * recvfrom(2) with support for MSG_DONTWAIT
  */
-#define send(...) windows_send(__VA_ARGS__)
+#define send windows_send
 ssize_t windows_send(int sockfd, const void *buf, size_t len, int flags);
 
 /**
  * recvfrom(2) with support for MSG_DONTWAIT
  */
-#define sendto(...) windows_send(__VA_ARGS__)
+#define sendto windows_send
 ssize_t windows_sendto(int sockfd, const void *buf, size_t len, int flags,
 					   const struct sockaddr *dest_addr, socklen_t addrlen);