New J2K: Fix existing test data

j2k/testData/fileOrElement/function/varVararg.new.kt

@@ -2,7 +2,7 @@ package demo
 
 internal class Test {
     fun test(vararg args: Any?) {
-        var args: Any? = args
+        var argsx = args
         args = arrayOf(1, 2, 3)
     }
 }