[RESENT] PATCH: dlls/comctl32/listview.c - ScrollColumns fails if no columns exist

[Stefan Haller]

Hi all

Since my original patch [1] from February, 26th was not applied to the 
repository, I resend this patch request again now.

History:
Original posting from me was [1]. Matej Spiller-Muys found the same problem 
for a diffrent program, see postings [2] and [3].

Problem description:
Matej Spiller-Muys in [2]: "In MSDN it says that last column should never 
be deleted ... but under WinXP I'm able to delete last column without any 
problems."
As described for WinXP, this applies to WinNT4 for me, too. If all columns 
are removed (even though against documentation) LISTVIEW_ScrollColumns() 
calls LISTVIEW_GetColumnInfo() with column index -1 which makes the assert on 
it fail...

Affected applications:
- StarBase's StarTeam 4.2
- UltimateZip

Resolution:
Attached updated diff based on snapshot 20030709 fixes the problem.

Changelog:
* dlls/comctl32/listview.c
Stefan Haller <sh_at_grep.ch>
- Ignoring LISTVIEW_ScrollColumns() request if no columns in list

References:
[1] http://www.winehq.org/hypermail/wine-patches/2003/02/0212.html
[2] http://www.winehq.org/hypermail/wine-devel/2003/06/0312.html
[3] http://www.winehq.org/hypermail/wine-devel/2003/06/0317.html

Cheers
 Stefan Haller
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