ART: Suppress a warning in run-test 912

Bug: 73539757
Test: m test-art-host
Change-Id: Ib2ce20dede2df8caa829e9480e02669ced65ed57
diff --git a/test/912-classes/src-art/art/Test912.java b/test/912-classes/src-art/art/Test912.java
index ddfadf3..1a60185 100644
--- a/test/912-classes/src-art/art/Test912.java
+++ b/test/912-classes/src-art/art/Test912.java
@@ -398,6 +398,7 @@
     public static double dummy = Math.random();  // So it can't be compile-time initialized.
   }
 
+  @SuppressWarnings("RandomCast")
   private static class TestForInitFail {
     public static int dummy = ((int)Math.random())/0;  // So it throws when initializing.
   }