adjust onBeforeClose

Author: yiminghe

package.json

@@ -1,6 +1,6 @@
 {
   "name": "rc-dialog",
-  "version": "4.3.0",
+  "version": "4.3.1",
   "description": "dialog ui component for react",
   "keywords": [
     "react",

src/DialogWrap.jsx

@@ -62,8 +62,14 @@ class DialogWrap extends React.Component {
   }
 
   requestClose() {
-    if (this.props.onBeforeClose) {
-      this.props.onBeforeClose(this.close);
+    var onBeforeClose = this.props.onBeforeClose;
+    if (onBeforeClose) {
+      if (onBeforeClose.length) {
+        onBeforeClose(this.close);
+      } else {
+        onBeforeClose();
+        this.close();
+      }
     } else {
       this.close();
     }