BUILD: use MAXPATHLEN instead of NAME_MAX.

This fixes building on at least Solaris, where NAME_MAX doesn't exist.
diff --git a/src/cli.c b/src/cli.c
index b546fd0..9c77949 100644
--- a/src/cli.c
+++ b/src/cli.c
@@ -1354,7 +1354,7 @@
 	/* We will send sockets MAX_SEND_FD per MAX_SEND_FD, allocate a
 	 * buffer big enough to store the socket informations.
 	 */
-	tmpbuf = malloc(MAX_SEND_FD * (1 + NAME_MAX + 1 + IFNAMSIZ + sizeof(int)));
+	tmpbuf = malloc(MAX_SEND_FD * (1 + MAXPATHLEN + 1 + IFNAMSIZ + sizeof(int)));
 	if (tmpbuf == NULL) {
 		Warning("Failed to allocate memory to transfer socket informations\n");
 		goto out;