shithub: puzzles

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fixes polygon drawing

--- a/plan9.c

+++ b/plan9.c

@@ -244,16 +244,17 @@

 	Point *points;

 	frontend *fe = (frontend*)handle;

-	points = malloc(npoints * sizeof(Point));

+	points = malloc((npoints+1) * sizeof(Point));

 	for (int i = 0; i < npoints; i++) {

 		points[i].x = coords[i*2+0] + fe->ZP.x;

 		points[i].y = coords[i*2+1] + fe->ZP.y;

 	}

+	points[npoints] = points[0];

 	if (fillcolor >= 0)

 		fillpoly(screen, points, npoints, 0, fe->colors[fillcolor], ZP);

 	if (outlinecolor >= 0)

-		poly(screen, points, npoints, Endsquare, Endsquare, 0, fe->colors[outlinecolor], ZP);

+		poly(screen, points, npoints+1, Endsquare, Endsquare, 0, fe->colors[outlinecolor], ZP);

 	free(points);

 }