Test for the case when annotation arguments contain null in Java

This is an error in Java, but it may be present in the source by mistake

compiler/testData/loadJava/sourceJava/NullInAnnotation.java

@@ -0,0 +1,11 @@
+package test;
+
+public interface NullInAnnotation {
+    @interface Ann {
+        String a();
+        String[] b();
+    }
+
+    @Ann(a = null, b = {null})
+    void foo();
+}