Win32: handle WSAEINTR correctly, should fix #3101

(cherry picked from commit 2275df91)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

src/network/io.c

@@ -328,6 +328,7 @@ net_Read (vlc_object_t *restrict p_this, int fd, const v_socket_t *vs,
             switch (WSAGetLastError ())
             {
                 case WSAEWOULDBLOCK:
+                case WSAEINTR:
                 /* only happens with vs != NULL (TLS) - not really an error */
                     continue;