Program: 104987
Project: 104987
Buggy source:
/** 
 * Expires this <tt>Channel</tt>. Releases the resources acquired by this instance throughout its life time and prepares it to be garbage collected.
 */
public void expire(){
synchronized (this) {
    if (expired)     return;
 else     expired=true;
  }
  Content content=getContent();
  Conference conference=content.getConference();
  EventAdmin eventAdmin=conference.getEventAdmin();
  if (eventAdmin != null)   eventAdmin.sendEvent(EventFactory.channelExpired(this));
  try {
    content.expireChannel(this);
  }
  finally {
    try {
      closeStream();
    }
 catch (    Throwable t) {
      logger.warn("String_Node_Str" + getID() + "String_Node_Str"+ content.getName()+ "String_Node_Str"+ conference.getID()+ "String_Node_Str",t);
      if (t instanceof ThreadDeath)       throw (ThreadDeath)t;
    }
    try {
synchronized (transportManagerSyncRoot) {
        if (transportManager != null)         transportManager.close(this);
      }
    }
 catch (    Throwable t) {
      logger.warn("String_Node_Str" + "String_Node_Str" + getID() + "String_Node_Str"+ content.getName()+ "String_Node_Str"+ conference.getID()+ "String_Node_Str",t);
      if (t instanceof ThreadDeath)       throw (ThreadDeath)t;
    }
    try {
      onEndpointChanged(getEndpoint(),null);
    }
 catch (    Throwable t) {
      if (t instanceof ThreadDeath)       throw (ThreadDeath)t;
    }
    Videobridge videobridge=conference.getVideobridge();
    if (logger.isInfoEnabled()) {
      logger.info("String_Node_Str" + getID() + "String_Node_Str"+ content.getName()+ "String_Node_Str"+ conference.getID()+ "String_Node_Str"+ videobridge.getConferenceCountString());
    }
  }
}

Fixed version (ground truth):
/** 
 * Expires this <tt>Channel</tt>. Releases the resources acquired by this instance throughout its life time and prepares it to be garbage collected.
 * @return {@code true} if the channel was expired as a result of thiscall, and  {@code false} if the channel was already expired.
 */
public boolean expire(){
synchronized (this) {
    if (expired)     return false;
 else     expired=true;
  }
  Content content=getContent();
  Conference conference=content.getConference();
  EventAdmin eventAdmin=conference.getEventAdmin();
  if (eventAdmin != null)   eventAdmin.sendEvent(EventFactory.channelExpired(this));
  try {
    content.expireChannel(this);
  }
  finally {
    try {
      closeStream();
    }
 catch (    Throwable t) {
      logger.warn("String_Node_Str" + getID() + "String_Node_Str"+ content.getName()+ "String_Node_Str"+ conference.getID()+ "String_Node_Str",t);
      if (t instanceof ThreadDeath)       throw (ThreadDeath)t;
    }
    try {
synchronized (transportManagerSyncRoot) {
        if (transportManager != null)         transportManager.close(this);
      }
    }
 catch (    Throwable t) {
      logger.warn("String_Node_Str" + "String_Node_Str" + getID() + "String_Node_Str"+ content.getName()+ "String_Node_Str"+ conference.getID()+ "String_Node_Str",t);
      if (t instanceof ThreadDeath)       throw (ThreadDeath)t;
    }
    try {
      onEndpointChanged(getEndpoint(),null);
    }
 catch (    Throwable t) {
      if (t instanceof ThreadDeath)       throw (ThreadDeath)t;
    }
    Videobridge videobridge=conference.getVideobridge();
    if (logger.isInfoEnabled()) {
      logger.info("String_Node_Str" + getID() + "String_Node_Str"+ content.getName()+ "String_Node_Str"+ conference.getID()+ "String_Node_Str"+ videobridge.getConferenceCountString());
    }
  }
  return true;
}