NPE fix

package com.inteligr8.activiti.mq;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

import javax.annotation.PostConstruct;

import org.activiti.bpmn.model.BpmnModel;

import org.activiti.bpmn.model.FlowElement;

import org.activiti.bpmn.model.SequenceFlow;

	private Map<String, ServiceTask> processDefinitionMqSubscribeTasks;

	@PostConstruct

	private void init() {

		this.processDefinitionMqSubscribeTasks = new HashMap<>();

	}

	public synchronized boolean isMqStart(String processDefinitionId) {

		if (this.processDefinitionMqSubscribeTasks.containsKey(processDefinitionId)) {

			return this.processDefinitionMqSubscribeTasks.get(processDefinitionId) != null;