fix draw line

src/main.jai

@@ -3,7 +3,8 @@ main :: () {
     screen := New(Screen);
     init_screen(screen, 5, 2);
 
-    draw_line(screen, 0, 0, 0, 0);
+    draw_line(screen, 0, 0, 2, 0);
+    draw(screen, 3, 0, color = .FG_GREEN);
 
     print("%\n", screen.buffer);
 }