Fix search result highlight when scrolling
Summary:
The highlighted line of a search result is not updated correctly
when scrolling a screen with repeated lines.
Test Plan:
cat a file containing the same line repeated many times.
Search for a string, then scroll: the highlight line should
be displayed correctly.
Reviewers: Konsole, hindenburg
Reviewed By: Konsole, hindenburg
Subscribers: hindenburg, konsole-devel
Tags: Konsole
Differential Revision: https://phabricator.kde.org/D16820