[gardening] Mark service/regexp_test as Crashing on windows

Issue dart-lang/sdk#34422

Change-Id: I723512bfb68f58cf14d47a79dd443107db355507
Reviewed-on: https://dart-review.googlesource.com/74080
Reviewed-by: Martin Kustermann <kustermann@google.com>
Commit-Queue: Martin Kustermann <kustermann@google.com>

Author: mkustermann

runtime/observatory/tests/service/service_kernel.status

@@ -146,6 +146,9 @@ get_cpu_profile_timeline_rpc_test: Pass, RuntimeError # http://dartbug.com/31794
 [ $arch == simdbc64 && $compiler == dartk && $mode == debug ]
 eval_test: Pass, Slow
 
+[ $arch == x64 && $compiler == dartk && $mode == release && $system == windows ]
+regexp_function_test: Crash # Issue http://dartbug.com/34422
+
 [ $compiler == app_jitk && $mode == debug ]
 code_test: RuntimeError
 step_test: RuntimeError