MBeanInfo.equals() throws NPE if description of second MBeanInfo is null.

MBeanInfo mbi1 = new MBeanInfo("MyClass","",null,null,null,null);
MBeanInfo mbi2 = new MBeanInfo("MyClass",null,null,null,null,null);
      <= pass null as description

if (mbi1.equals(mbi2)) <= this throws NPE