[patch] Fix crash on reading stabs

[Joel Brobecker]

> If it isn't obviously approved please feel free to drop it as one
> should not use STABS in the first place.

Agreed. Anyone using stabs should be paying us a tithe...

That being said:

> gdb/
> 2009-11-17  Jan Kratochvil  <jan.kratochvil@redhat.com>
> 
> 	* dbxread.c (set_namestring): Remove cast to unsigned.  Check N_STRX
> 	overflow.

This patch looks fine.

-- 
Joel