[patch, fortran] PR32331 - improve error message

[Daniel Franke]

Hi all.

This is a simple one. The message

	Error: iterator end at (1) does not simplify

is not exactly easy to grasp at first. Attached patch rephrases this a bit to

	Error: start of implied-do loop at (1) could not be
	simplified to a constant value

No testcase as it only changes the wording of the error, no functionality.


2010-05-05  Daniel Franke  <franke.daniel@gmail.com>

	* resolve.c (traverse_data_list): Rephrase error message for
	non-constant bounds in data-implied-do.


Regression tested on i686-pc-linux-gnu.

Ok for trunk?

	Daniel
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