Fix memory leaks (lacking destructors for uis)

Change-Id: I07c2708d727d59286b0d625a4c0c318f18b03b93
Reviewed-by: Tobias Hunger <tobias.hunger@nokia.com>
Reviewed-by: hjk <qthjk@ovi.com>

src/plugins/git/remotedialog.h

@@ -56,6 +56,7 @@ class RemoteAdditionDialog : public QDialog
 
 public:
     explicit RemoteAdditionDialog(QWidget *parent = 0);
+    ~RemoteAdditionDialog();
 
     QString remoteName() const;
     QString remoteUrl() const;