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/valgrind/suppressiondialog.h

@@ -58,6 +58,7 @@ class SuppressionDialog : public QDialog
 
 public:
     SuppressionDialog(MemcheckErrorView *view);
+    ~SuppressionDialog();
 
     virtual void accept();
     virtual void reject();