Fix WANTLIB (missing util).

Found by using dpb -R (it didn't rebuild zsh after the recent bumps
to libutil, which then caused build errors in other ports like
lang/bacon depending on zsh).

ok?

Ciao,
	Kili

Index: Makefile
===================================================================
RCS file: /cvs/ports/shells/zsh/Makefile,v
diff -u -p -r1.98 Makefile
--- Makefile	8 Jan 2024 10:33:09 -0000	1.98
+++ Makefile	18 Dec 2024 05:49:41 -0000
@@ -1,7 +1,7 @@
 COMMENT=	Z shell, Bourne shell-compatible
 
 V=		5.9
-REVISION=	0
+REVISION=	1
 DISTNAME=	zsh-$V
 CATEGORIES=	shells
 
@@ -17,7 +17,7 @@ EXTRACT_SUFX=	.tar.xz
 # BSD
 PERMIT_PACKAGE=	Yes
 
-WANTLIB=	c curses iconv m pcre
+WANTLIB=	c curses iconv m pcre util
 
 LIB_DEPENDS=	converters/libiconv \
 		devel/pcre