cad/opencascade: Do not set VIS_CMAKE_ON twice

Given no feedback to the contrary do the most sensible thing and
merge the two VIS_CMAKE_ON together.

PR:		234700
Approved by:	thierry (maintainer timeout, 2 weeks)

cad/opencascade/Makefile

@@ -3,7 +3,7 @@
 
 PORTNAME=	opencascade
 PORTVERSION=	7.3.0
-PORTREVISION=	2
+PORTREVISION=	3
 CATEGORIES=	cad science
 MASTER_SITES=	LOCAL/thierry
 
@@ -66,15 +66,13 @@ FFMPEG_CMAKE_OFF=	-DUSE_FFMPEG:BOOL=OFF
 FFMPEG_LIB_DEPENDS=	libavcodec.so:multimedia/ffmpeg
 
 VIS_CMAKE_ON=		-DUSE_FREEIMAGE:BOOL=ON -DUSE_GL2PS:BOOL=ON	\
-			-DUSE_FREETYPE:BOOL=ON
+			-DUSE_FREETYPE:BOOL=ON -D3RDPARTY_FREETYPE_DIR=${LOCALBASE}
 VIS_CMAKE_OFF=		-DUSE_FREEIMAGE:BOOL=OFF -DUSE_GL2PS:BOOL=OFF	\
 			-DUSE_FREETYPE:BOOL=OFF
 VIS_LIB_DEPENDS=	libftgl.so:graphics/ftgl		\
 			libgl2ps.so:print/gl2ps		\
 			libfreeimageplus.so:graphics/freeimage
 
-VIS_CMAKE_ON=	-D3RDPARTY_FREETYPE_DIR=${LOCALBASE}
-
 DOXYGEN_IMPLIES=	DOCS
 DOXYGEN_USE=	TEX=latex:build
 DOXYGEN_BUILD_DEPENDS=	bash:shells/bash		\