Fixed issue #2679: Don't show horizontal scrollbar when logwidthmarker is set

Merged username-removed-360247 requested to merge engycz/tortoisegit:issue-2679 into master

Scintilla has default width of horizontal scrollbar 2000. It applies only when logwidthmarker is set and edit window is not wrapped.

Signed-off-by: Jiří Engelthaler EngyCZ@gmail.com