[patch] Backport fix for PR c++/28284 back to 4.1 branch

[Mark Mitchell]

Volker Reichelt wrote:

> :ADDPATCH C++:
> 
> 
> 2006-12-01  Volker Reichelt  <reichelt@igpm.rwth-aachen.de>
> 
> 	Backport:
> 	2006-08-27  Simon Martin  <simartin@users.sourceforge.net>
> 
> 	PR c++/28284
> 	* pt.c (fold_non_dependent_expr): Make sure expr is not dereferenced if it
> 	is NULL.

:REVIEWMAIL: OK

-- 
Mark Mitchell
CodeSourcery
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