Don't clear lineedit in non normal echo mode when validation is invalid

This fixes a regression introduced with
c09e9f71173a698670d6c728291ee24f53d50800 which caused the lineedit to
clear the whole text when an invalid character was entered into a lineedit
with an echo mode that was not Normal and a validator was set.

Now if undo() is called directly then it will still clear the text as it
is considered to be called as a user. Whereas the validation will take
care of the invalid entry by using internalUndo() as before which avoids
the clearing of the entire text.

Task-number: QTBUG-29318
Change-Id: I5ff5777a75ab864de2217441b5f518f50646bd8f
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>

0 files changed, 0 insertions, 0 deletions