[PATCH] Vartracking: Remove assertion in vt_add_function_parameters

[Andreas Krebbel]

> +      if (decl == parm)
> +	continue;
> 
> has to be "if (decl != parm)".

Ooops.  Fortunately the change I've tested was the correct one.
Although it is most likely not a correct solution it at least fixes
the testcase.

-Andreas-