net/yaz: unbreak build with tcl!=8.6 (+)

Replace hardcoded tcl version with corresponding macro from Uses/tcl.mk

Pointyhat to:	nc
Approved by:	portmgr blanket (trivial fix build)
Sponsored by:	Netzkommune GmbH

net/yaz/Makefile

@@ -41,7 +41,7 @@ REDIS_CONFIGURE_WITH=	redis
 REDIS_LIB_DEPENDS=	libhiredis.so:databases/hiredis
 
 post-patch:
-	@${REINPLACE_CMD} 's|tclsh |tclsh8.6 |' ${WRKSRC}/configure
+	@${REINPLACE_CMD} 's|tclsh |tclsh${TCL_VER} |' ${WRKSRC}/configure
 
 post-configure:
 	@${REINPLACE_CMD} -e 's,[$$]{datarootdir}/man,${PREFIX}/man,' \