Fix nullaware dynamic dispatch

pkg/dev_compiler/lib/src/compiler/code_generator.dart

Index: pkg/dev_compiler/lib/src/compiler/code_generator.dart
diff --git a/pkg/dev_compiler/lib/src/compiler/code_generator.dart b/pkg/dev_compiler/lib/src/compiler/code_generator.dart
index 6fca9c6b0406560a069a717630c67dcfb229f2d1..7df66d29e2a33d9149355743fefa73b20995cab9 100644
--- a/pkg/dev_compiler/lib/src/compiler/code_generator.dart
+++ b/pkg/dev_compiler/lib/src/compiler/code_generator.dart
@@ -4868,7 +4868,7 @@ class CodeGenerator extends Object
         }
 
         var param = _createTemporary('_', nodeTarget.staticType,
-            nullable: false, dynamicInvoke: isDynamicInvoke(node));
+            nullable: false, dynamicInvoke: isDynamicInvoke(nodeTarget));
         var baseNode = _stripNullAwareOp(node, param);
         tail.add(
             new JS.ArrowFun(<JS.Parameter>[_visit(param)], _visit(baseNode)));