Release font engine refcount when done using it in QTextEngine

5f2b6dd2a50275bc05ae5d7e9dd8902d6d49d9df increased refcounts for
font engines in QTextEngine cache, we need to decrease them when
the QTextEngine is deallocated.

Task-number: QTBUG-21222
Reviewed-by: Eskil
(cherry picked from commit 8935a84e18804c7ff4b7336e3cfdf1cd558eaf1c)

Change-Id: I079c903d60e1bbcf78f555f8044dde69af82cf0e
Reviewed-by: Jiang Jiang <jiang.jiang@nokia.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/gui/text/qtextengine_p.h b/src/gui/text/qtextengine_p.h
index 2bdc866276..d821fa50cb 100644
--- a/src/gui/text/qtextengine_p.h
+++ b/src/gui/text/qtextengine_p.h
@@ -631,6 +631,7 @@ public:
     int lineNumberForTextPosition(int pos);
     int positionAfterVisualMovement(int oldPos, QTextCursor::MoveOperation op);
     void insertionPointsForLine(int lineNum, QVector<int> &insertionPoints);
+    void resetFontEngineCache();
 
 private:
     void setBoundary(int strPos) const;