Voldemort's Sticky Fingers?

[Cindy]

No: HPFGUIDX 137015

Pg 446 HBP AE

"For a second, Harry was on the verge of shouting a pointless 
warning:  He was sure that Voldemort's hand had twitched toward his 
pocket and his wand; but then the moment had passed, Voldemort had 
turned away, the door was closing, and he was gone."

So what to make of this? It appears that Harry felt Voldemort was 
considering attacking DD and the line could have been included to 
reinforce Voldemort's fear (respect) of DD's powers. 

However, even on the first reading, I got the impression that perhaps 
Voldemort was quickly swiping something, and of course, that something 
could be a trophy for a horcrux, something of Gryffindor's or a 
personal item of DD's--which I think Voldemort would really love to 
have as his horcrux.  Has DD ever talked about misplacing something?

Cindy