vaev-layout: Missing call to reduce overlap when generating borders.

src/web/vaev-layout/frag.cpp

@@ -271,6 +271,7 @@ Output layout(Tree &t, Frag &f, Input input) {
         f.layout.borders = borders;
         f.layout.margin = margin;
         f.layout.radii = _computeRadii(t, f, size);
+        f.layout.radii.reduceOverlap(f.layout.size);
     }
 
     return Output::fromSizeAndMargin(size, margin);