Fixes leak of DolphinFileMetaDataWidget in ToolTipManager
Summary:
Fixes leak of DolphinFileMetaDataWidget in ToolTipManager. The
destructor of ToolTipManager failed to delete the m_fileMetaDataWidget
member. This is seen at shutdown but also when you close a tab that has
displayed a tooltip.
Test Plan:
Compile Dolphin with address sanitizer
Open Dolphin
Show a tooltip
Close Dolphin
Reviewers: Dolphin, elvisangelaccio
Reviewed By: Dolphin, elvisangelaccio
Subscribers: kfm-devel
Tags: Dolphin
Differential Revision: https://phabricator.kde.org/D19485