Simplify hatching.

Author: anntzer

Diff for: ext/_mplcairo.cpp

@@ -1028,8 +1028,7 @@ void GraphicsContextRenderer::draw_path(
     cairo_set_source(cr_, hatch_pattern);
     cairo_pattern_destroy(hatch_pattern);
     load_path();
-    cairo_clip_preserve(cr_);
-    cairo_paint(cr_);
+    cairo_fill_preserve(cr_);
     cairo_restore(cr_);
   }
   auto const& chunksize = rc_param("agg.path.chunksize").cast<int>();