style/quality only

No functional changes.

- add `override' everywhere where missing
- almost pass clang's `-Wweak-vtables'
- avoid some float/double conversions
- remove unused private members
- make signedness conversions explicit
- put stuff in right namespaces to aid analysis

1 files changed, 9 insertions, 3 deletions

diff --git a/variant/default/main-window.cpp b/variant/default/main-window.cpp
index 7b2456e8..11d3eb97 100644
--- a/variant/default/main-window.cpp
+++ b/variant/default/main-window.cpp
@@ -339,9 +339,15 @@ main_window::~main_window()
     if (work)
     {
         stop_tracker_();
-        QEventLoop ev;
-        ev.processEvents();
-        portable::sleep(2000);
+
+        constexpr int inc = 100, max = 2000;
+
+        for (int k = 0; k < max; k += inc)
+        {
+            QEventLoop ev;
+            ev.processEvents();
+            portable::sleep(inc);
+        }
     }
 
     exit();