Bug 551660 - Validation error after Undo still present

In order for validation icons to update correctly we must never directly
modify the list of diagnostics. By changing the list directly we cannot
identify changes of diagnostics. Thus the update of the validation icon
might not work.

Change-Id: Id4d358247fd453d0f367b799292740f4eb269115
Signed-off-by: Eugen Neufeld <eneufeld@eclipsesource.com>
2 files changed