Fix visual

src/chart/graph.js

 import * as echarts from '../echarts';
-import * as zrUtil from 'zrender/src/core/util';
 
 import './graph/GraphSeries';
 import './graph/GraphView';
@@ -16,9 +15,7 @@ import createView from './graph/createView';
 
 echarts.registerProcessor(categoryFilter);
 
-echarts.registerVisual(zrUtil.curry(
-    visualSymbol, 'graph', 'circle', null
-));
+echarts.registerVisual(visualSymbol('graph', 'circle', null));
 echarts.registerVisual(categoryVisual);
 echarts.registerVisual(edgeVisual);
 

src/chart/pictorialBar.js

@@ -14,6 +14,4 @@ import '../component/gridSimple';
 echarts.registerLayout(zrUtil.curry(
     barLayoutGrid, 'pictorialBar'
 ));
-echarts.registerVisual(zrUtil.curry(
-    visualSymbol, 'pictorialBar', 'roundRect', null
-));
+echarts.registerVisual(visualSymbol('pictorialBar', 'roundRect'));

src/chart/radar.js

@@ -14,7 +14,7 @@ import dataFilter from '../processor/dataFilter';
 import backwardCompat from './radar/backwardCompat';
 
 echarts.registerVisual(zrUtil.curry(dataColor, 'radar'));
-echarts.registerVisual(zrUtil.curry(visualSymbol, 'radar', 'circle', null));
+echarts.registerVisual(visualSymbol('radar', 'circle'));
 echarts.registerLayout(radarLayout);
 echarts.registerProcessor(zrUtil.curry(dataFilter, 'radar'));
 echarts.registerPreprocessor(backwardCompat);
\ No newline at end of file

src/chart/tree.js

@@ -9,6 +9,6 @@ import visualSymbol from '../visual/symbol';
 import orthogonalLayout from './tree/orthogonalLayout';
 import radialLayout from './tree/radialLayout';
 
-echarts.registerVisual(zrUtil.curry(visualSymbol, 'tree', 'circle', null));
+echarts.registerVisual(visualSymbol('tree', 'circle'));
 echarts.registerLayout(orthogonalLayout);
 echarts.registerLayout(radialLayout);