QLibraryPrivate::release() can be called multiple times and it is not
appropriate to unregister and save the executed data for a library there.
The library may still be used when it is released and it seems safer to save
its data only once and probably when the application ends.
Not calling __coveragescanner_unregister_library does not affect the
coverage data. Calling __coveragescanner_register_library at load time
without calling __coveragescanner_unregister_library means the plugin will
stay loaded until the application ends. Removing the call to
releaseCoverageTool() is so acceptable since the data will be saved
when the application exits.
Task-number: QTQAINFRA-416.
Change-Id: I3135d2e203ecacfeff4a5b8ffdcd4d62fbc1db33
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
a8495549d0