Update comment in TypeVerificationHelper for types

Change-Id: I94eec88175e813d9fc7f4563471ddb56a4eabf1c
diff --git a/src/main/java/com/android/tools/r8/cf/TypeVerificationHelper.java b/src/main/java/com/android/tools/r8/cf/TypeVerificationHelper.java
index a081d34..4869bc5 100644
--- a/src/main/java/com/android/tools/r8/cf/TypeVerificationHelper.java
+++ b/src/main/java/com/android/tools/r8/cf/TypeVerificationHelper.java
@@ -188,7 +188,7 @@
     while (iterator.hasNext()) {
       result = result.join(toTypeElement(iterator.next()), appView);
     }
-    // All types are reference types so the join is either a class or an array.
+    // All types are reference types so the join is either a class, an interface or an array.
     if (result.isClassType()) {
       ClassTypeElement classType = result.asClassType();
       if (classType.getClassType().isIdenticalTo(appView.dexItemFactory().objectType)