message: [Host/macox] Remove an unneeded #ifdef static_analyzer.
  Reduces the difference with llvm.org/lldb.
diff: @@ -1440,13 +1440,9 @@ HostThread Host::StartMonitoringChildProcess(
  if (source) {
  Host::MonitorChildProcessCallback callback_copy = callback;
  -#ifndef __clang_analyzer__
  - // This works around a bug in the static analyzer where it claims
  - // "dispatch_release" isn't a valid identifier.
  ::dispatch_source_set_cancel_handler(source, ^{
  dispatch_release(source);
  });
  -#endif
  ::dispatch_source_set_event_handler(source, ^{
  int status = 0;
  