Add brackets around net.c macro arguments
diff --git a/library/net.c b/library/net.c
index 5360c07..b42b86f 100644
--- a/library/net.c
+++ b/library/net.c
@@ -55,8 +55,8 @@
#endif
#endif /* _MSC_VER */
-#define read(fd,buf,len) recv(fd,(char*)buf,(int) len,0)
-#define write(fd,buf,len) send(fd,(char*)buf,(int) len,0)
+#define read(fd,buf,len) recv( fd, (char*)( buf ), (int)( len ), 0 )
+#define write(fd,buf,len) send( fd, (char*)( buf ), (int)( len ), 0 )
#define close(fd) closesocket(fd)
static int wsa_init_done = 0;