Make test of malformed types a dynamic type error.

tests/language/div_with_power_of_two2_test.dart

Index: tests/language/div_with_power_of_two2_test.dart
diff --git a/tests/language/div_with_power_of_two2_test.dart b/tests/language/div_with_power_of_two2_test.dart
index 936aadfba150361841c7b296446c00114a733f3b..03a83cab7a0211a027b8536c8d6829bf017e5011 100644
--- a/tests/language/div_with_power_of_two2_test.dart
+++ b/tests/language/div_with_power_of_two2_test.dart
@@ -100,6 +100,6 @@ main() {
     }
      Expect.throws(() => divBy0(4),
                   (e) => e is IntegerDivisionByZeroException
-                         || e is RuntimeError);
+                         || e is UnsupportedError);
   }
 }