Relax --debug-code checks that runtime returns are not the hole

test/mjsunit/mjsunit.status

 # Copyright 2012 the V8 project authors. All rights reserved.
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #     * Redistributions of source code must retain the above copyright
 #       notice, this list of conditions and the following disclaimer.
 #     * Redistributions in binary form must reproduce the above
 #       copyright notice, this list of conditions and the following
 #       disclaimer in the documentation and/or other materials provided
@@ skipping 16 matching lines @@
 
 prefix mjsunit
 
 # All tests in the bug directory are expected to fail.
 bugs/*: FAIL
 
 ##############################################################################
 # Fails.
 regress/regress-1119: FAIL
 
-# TODO(wingo): Currently fails in no-snapshot mode, hence disabled for now.
-harmony/generators-objects: SKIP
-
 # Issue 1719: Slow to collect arrays over several contexts.
 regress/regress-524: SKIP
 # When that bug is fixed, revert the expectation to:
 # Skip long running test in debug and allow it to timeout in release mode.
 # regress/regress-524: (PASS || TIMEOUT), SKIP if $mode == debug
 
 # Deferred stack trace formatting is temporarily disabled.
 stack-traces-gc: PASS || FAIL
 
 ##############################################################################
@@ skipping 179 matching lines @@
 # Requires bigger stack size in the Genesis and if stack size is increased,
 # the test requires too much time to run.  However, the problem test covers
 # should be platform-independent.
 regress/regress-1132: SKIP
 
 # Poor performance for NaCl V8 causes an assertion failure for this test.
 regress/regress-165637: SKIP
 
 # Skip long running test that times out in debug mode and goes OOM on NaCl.
 regress/regress-crbug-160010: SKIP