the code is wrong(ch.qos.logback.core.ContextBase.setStatusManager)?
/**

• Set the {@link StatusManager}

  for this context. Note that by default this

• context is initialized with a {@link BasicStatusManager}

  . A null value for

• the 'statusManager' argument is not allowed.
• <p/>
• <p> A malicious attacker can set the status manager to a dummy instance,
• disabling internal error reporting.
  *
• @param statusManager the new status manager
  */
  public void setStatusManager(StatusManager statusManager) {
  // this method was added in response to http://jira.qos.ch/browse/LBCORE-35
  if (sm == null) { throw new IllegalArgumentException("null StatusManager not allowed"); }
  this.sm = statusManager;
  }
  
  
  following right?
  
  public void setStatusManager(StatusManager statusManager) {
  // this method was added in response to http://jira.qos.ch/browse/LBCORE-35
  if (statusManager == null) { throw new IllegalArgumentException("null StatusManager not allowed"); }

  this.sm = statusManager;
  }