net/mpd5: do not use negative value for socket backlog

Import r2463 from upstream.
As per POSIX, supply INT_MAX for listen(2) to use system default.
This changed in preparation for FreeBSD 14.

See also:	https://reviews.freebsd.org/D31821

net/mpd5/Makefile

@@ -1,6 +1,6 @@
 PORTNAME=	mpd
 DISTVERSION=	5.9
-PORTREVISION=	11
+PORTREVISION=	12
 CATEGORIES=	net
 MASTER_SITES=	SF/${PORTNAME}/Mpd5/Mpd-${PORTVERSION}
 PKGNAMESUFFIX=	5

net/mpd5/files/patch-listen

@@ -0,0 +1,13 @@
+Index: src/util.c
+===================================================================
+--- src/util.c	(revision 2462)
++++ src/util.c	(revision 2463)
+@@ -982,7 +982,7 @@ TcpGetListenPort(struct u_addr *addr, in_port_t port, 
+ 
+ /* Make socket available for connections  */
+ 
+-  if (listen(sock, -1) < 0)
++  if (listen(sock, INT_MAX) < 0)
+   {
+     Perror("%s: listen", __FUNCTION__);
+     (void) close(sock);