Fix null aware generic invocation.

lib/src/compiler/code_generator.dart

Index: lib/src/compiler/code_generator.dart
diff --git a/lib/src/compiler/code_generator.dart b/lib/src/compiler/code_generator.dart
index efd3de99c60dc02ece3c50b063de1bab89e6d39e..c6a700390f429d073f854cae677efa1797b670d9 100644
--- a/lib/src/compiler/code_generator.dart
+++ b/lib/src/compiler/code_generator.dart
@@ -4302,8 +4302,9 @@ class CodeGenerator extends GeneralizingAstVisitor
       return AstBuilder.propertyAccess(newTarget, node.propertyName);
     } else {
       var invoke = node as MethodInvocation;
-      return AstBuilder.methodInvoke(
-          newTarget, invoke.methodName, invoke.argumentList.arguments);
+      return AstBuilder.methodInvoke(newTarget, invoke.methodName,
+          invoke.typeArguments, invoke.argumentList.arguments)
+        ..staticInvokeType = invoke.staticInvokeType;
     }
   }