Fix map_insert_remove_oom_test.

Increase old gen heap size so that the test can start.

Bug: https://github.com/dart-lang/sdk/issues/33344
Change-Id: I1946d3c6d10a2a2504b7b290c6ea638c261cd5fe
Reviewed-on: https://dart-review.googlesource.com/58541
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Alexander Aprelev <aam@google.com>
diff --git a/tests/standalone_2/map_insert_remove_oom_test.dart b/tests/standalone_2/map_insert_remove_oom_test.dart
index f20126a..143fd18 100644
--- a/tests/standalone_2/map_insert_remove_oom_test.dart
+++ b/tests/standalone_2/map_insert_remove_oom_test.dart
@@ -2,9 +2,9 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 //
-// VMOptions=--old_gen_heap_size=11
+// VMOptions=--old_gen_heap_size=12
 //
-// Notice we set the old gen heap size to 11 MB, which seems to be the minimum
+// Notice we set the old gen heap size to 12 MB, which seems to be the minimum
 // (in debug mode) to not cause us run OOM during isolate initialization.  The
 // problem here is that we pre-allocate certain exceptions, e.g. NullThrownError
 // during isolate initialization, but if we have an allocation failure before