x11/swaylock: unbreak snapshot --version after 60507c96

https://github.com/swaywm/swaylock/commit/84598b08f21a

x11/swaylock/Makefile

@@ -42,7 +42,7 @@ PIXBUF_MESON_ENABLED=	gdk-pixbuf
 post-patch:
 # Extract (snapshot) version from the port instead of meson.build
 	@${REINPLACE_CMD} -i .nogit -e 's/git.found()/false/' \
-		-e '/project_version/s/@0@/${DISTVERSIONFULL}/' \
+		-e "s/meson.project_version()/'${DISTVERSIONFULL}'/" \
 		${WRKSRC}/meson.build
 
 .include <bsd.port.mk>