title: concating 2 unicode strings - how to do that?
body: <p>I have 2 unicode strings which I like to concat.</p>
  
  <p>everytime I try to concat using RtlAppendUnicodeStringToString it telling me "STATUS_BUFFER_TOO_SMALL", even though im increasing my destination unicodestring.length to big numbers.</p>
  
  <p>what is the method to concat 2 unicode strings ? thanks</p>