Renderer: Fix memory leak in renderStatic

Author: Perlkonig

src/index.ts

@@ -136,7 +136,9 @@ export const renderStatic = (json: APRenderRep, opts = {} as IRenderOptions): st
     node.setAttribute("id", uid);
     opts.divelem = node;
     const canvas = render(json, opts);
-    return addPrefix(canvas.svg(), opts);
+    const svgText = addPrefix(canvas.svg(), opts);
+    document.removeChild(node);
+    return svgText;
 }
 
 /**