fix g++.dg/other/stdarg3.C for ia64-linux

[Joseph S. Myers]

On Thu, 19 May 2005, Richard Henderson wrote:

> -// { dg-options "-mlp64" { target "ia64-*-*" } }
> +// { dg-options "-mlp64" { target "ia64-*-hpux" } }

Should be -hpux* not plain -hpux.

-- 
Joseph S. Myers               http://www.srcf.ucam.org/~jsm28/gcc/
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