fix comments

zhuxingwei · zhuxingwei · commit 58e19b813b7f · 2019-04-19T14:59:42.000+08:00
diff --git a/Runtime/widgets/binding.cs b/Runtime/widgets/binding.cs
@@ -143,7 +143,7 @@ public void detachRootWidget() {
                 return;
             }
             
-            //draw one frame to ensure that the former widget tree has been layout for at least once
+            //The former widget tree must be layout first before its destruction
             this.drawFrame();
             this.attachRootWidget(null);
             this.buildOwner.buildScope(this._renderViewElement);

Original file line number	Diff line number	Diff line change
`@@ -143,7 +143,7 @@ public void detachRootWidget() {`
`143`	`143`	`return;`
`144`	`144`	`}`
`145`	`145`
`146`		`- //draw one frame to ensure that the former widget tree has been layout for at least once`
	`146`	`+ //The former widget tree must be layout first before its destruction`
`147`	`147`	`this.drawFrame();`
`148`	`148`	`this.attachRootWidget(null);`
`149`	`149`	`this.buildOwner.buildScope(this._renderViewElement);`