Valgrind: Modernize

modernize-*

Change-Id: I6db60dce78cf2575e36caa597b1f095adba34fd9
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/valgrind/suppressiondialog.h

@@ -54,8 +54,8 @@ public:
 
 private:
     void validate();
-    void accept();
-    void reject();
+    void accept() override;
+    void reject() override;
 
     MemcheckErrorView *m_view;
     ValgrindBaseSettings *m_settings;