avoid unnecessary assert

Kingwl · Kingwl · commit 7fd86584cbfd · 2019-09-27T21:43:15.000+08:00
diff --git a/src/compiler/binder.ts b/src/compiler/binder.ts
@@ -1440,7 +1440,7 @@ namespace ts {
             bindCondition(node.left, trueTarget, notNullLabel);
             currentFlow = finishFlowLabel(notNullLabel);
             bind(node.operatorToken);
-            bindCondition(node.right, trueTarget, falseTarget!);
+            bindCondition(node.right, trueTarget, falseTarget);
         }
 
         function bindPrefixUnaryExpressionFlow(node: PrefixUnaryExpression) {

Original file line number	Diff line number	Diff line change
`@@ -1440,7 +1440,7 @@ namespace ts {`
`1440`	`1440`	`bindCondition(node.left, trueTarget, notNullLabel);`
`1441`	`1441`	`currentFlow = finishFlowLabel(notNullLabel);`
`1442`	`1442`	`bind(node.operatorToken);`
`1443`		`- bindCondition(node.right, trueTarget, falseTarget!);`
	`1443`	`+ bindCondition(node.right, trueTarget, falseTarget);`
`1444`	`1444`	`}`
`1445`	`1445`
`1446`	`1446`	`function bindPrefixUnaryExpressionFlow(node: PrefixUnaryExpression) {`