Crash with invokeDynamic on MethodMissing attempt

[Christian Thalinger]

On Thu, 2009-05-21 at 04:59 -0700, John Rose wrote:
> Yuck, a leftover from the invokeinterface encoding.  It's even clearly  
> marked my code-distress marker (@@@@).
> 
> Yes, your fix looks OK....
> 
> But, the @@@@ line wants to be something better, and I think there are  
> better entry points in constantPoolOop since I refactored the logic  
> there.  Try to use cp->signature_ref_at() or at least  
> nt_signature_ref_at().  (You can remove the distress marker.)

Yes, using nt_signature_ref_at() looks like the right thing to do.  I
changed that.

-- Christian