[gfortran] Fix PR15129: Assumed length character length handled wrongly

[Paul Brook]

> 2004-07-15  Tobias Schlueter  <tobias.schlueter@physik.uni-muenchen.de>
>
> 	PR fortran/15129
> 	* trans-decl.c (gfc_build_function_decl): Create a new chardecl
> 	for every assumed length character dummy argument.

Ok.

Paul