qt: Plug many memory leaks

None of these are very serious, and are leaks in objects that are
created at most one time.

In most cases this means properly using the QObject parent hierarchy,
except for BanTablePriv/PeerTablePriv which are not QObject,
so use a std::unique_ptr instead.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/qt/coincontroldialog.cpp b/src/qt/coincontroldialog.cpp
index 1a1671f0ee..20c8fc845b 100644
--- a/src/qt/coincontroldialog.cpp
+++ b/src/qt/coincontroldialog.cpp
@@ -52,7 +52,7 @@ CoinControlDialog::CoinControlDialog(const PlatformStyle *_platformStyle, QWidge
              unlockAction = new QAction(tr("Unlock unspent"), this);                    // we need to enable/disable this
 
     // context menu
-    contextMenu = new QMenu();
+    contextMenu = new QMenu(this);
     contextMenu->addAction(copyAddressAction);
     contextMenu->addAction(copyLabelAction);
     contextMenu->addAction(copyAmountAction);