graphics/lcms2: Update to 2.19rc2

Fixes several issues, for reference see
https://marc.info/?l=oss-security&m=177646929211758&w=2

pointed out by and ok tb@, ok naddy@

graphics/lcms2/Makefile

@@ -1,10 +1,11 @@
 COMMENT =		color management library
 
-DISTNAME =		lcms2-2.17
+DISTNAME =		lcms2-2.18pl20260420
+COMMIT =		f8425ad6ab6fc4c7c8a52187a700a8b38d92e012
+DIST_TUPLE =		github mm2 Little-CMS ${COMMIT} .
 CATEGORIES =		graphics
-SITES =			${SITE_SOURCEFORGE:=lcms/}
 
-SHARED_LIBS +=  lcms2                2.0      # 2.16
+SHARED_LIBS +=  lcms2                3.0      # 2.19
 
 HOMEPAGE =		https://www.littlecms.com/
 
@@ -21,6 +22,8 @@ CONFIGURE_STYLE =	gnu
 CONFIGURE_ENV =		CPPFLAGS="-I${LOCALBASE}/include" \
 			LDFLAGS="-L${LOCALBASE}/lib"
 
+WRKDIST =		${WRKDIR}/Little-CMS-${COMMIT}
+
 DEBUG_PACKAGES =	${BUILD_PACKAGES}
 
 .include <bsd.port.mk>

graphics/lcms2/distinfo

@@ -1,2 +1,2 @@
-SHA256 (lcms2-2.17.tar.gz) = 0Rr1aeQqG6oWUNIK1h0S5Br0/q1Kp5ZKAfk7CLU6sHQ=
-SIZE (lcms2-2.17.tar.gz) = 5245319
+SHA256 (mm2-Little-CMS-f8425ad6ab6fc4c7c8a52187a700a8b38d92e012.tar.gz) = KilZfa5xc2sOiBSCrckTHv6PMWPvVfN6/EfsXp2Oc4s=
+SIZE (mm2-Little-CMS-f8425ad6ab6fc4c7c8a52187a700a8b38d92e012.tar.gz) = 5731247