Suppress error-prone warnings in CompilerTest.

Change-Id: I68ae2458c3f96d662ecc536e7729042ca64c1abc

user/test/com/google/gwt/dev/jjs/test/CompilerTest.java

diff --git a/user/test/com/google/gwt/dev/jjs/test/CompilerTest.java b/user/test/com/google/gwt/dev/jjs/test/CompilerTest.java
index 9c36213..cc52752 100644
--- a/user/test/com/google/gwt/dev/jjs/test/CompilerTest.java
+++ b/user/test/com/google/gwt/dev/jjs/test/CompilerTest.java
@@ -768,7 +768,7 @@
    * Development Mode or Production Mode, but the important thing is that the
    * compiler does not crash.
    */
-  @SuppressWarnings("divzero")
+  @SuppressWarnings({"divzero", "ConstantOverflow"})
   public void testDivByZero() {
     assertTrue(Double.isNaN(0.0 / 0.0));