Add SafeVarargs to test-class to supress warning

Change-Id: Ie437da1ad38f821059932e900e2501fb6e01c080
diff --git a/src/test/java/com/android/tools/r8/desugar/desugaredlibrary/IteratorTest.java b/src/test/java/com/android/tools/r8/desugar/desugaredlibrary/IteratorTest.java
index 70da258..2a968a0 100644
--- a/src/test/java/com/android/tools/r8/desugar/desugaredlibrary/IteratorTest.java
+++ b/src/test/java/com/android/tools/r8/desugar/desugaredlibrary/IteratorTest.java
@@ -184,6 +184,7 @@
     int index;
     E[] items;
 
+    @SafeVarargs
     public MyIterator(E... items) {
       this.items = items;
     }