Use `FL_OVERRIDE` for all overridden virtual methods (#611)

FL_OVERRIDE is defined as `override` for C++11 and higher
FL_OVERRIDE is defined as `override` for VisualC 2015 and newer
Don't interfere with Fl_Widget::override()

1 files changed, 2 insertions, 2 deletions

diff --git a/FL/Fl_Roller.H b/FL/Fl_Roller.H
index bd37a886c..5775058b8 100644
--- a/FL/Fl_Roller.H
+++ b/FL/Fl_Roller.H
@@ -37,9 +37,9 @@
 */
 class FL_EXPORT Fl_Roller : public Fl_Valuator {
 protected:
-  void draw();
+  void draw() FL_OVERRIDE;
 public:
-  int handle(int);
+  int handle(int) FL_OVERRIDE;
   Fl_Roller(int X,int Y,int W,int H,const char* L=0);
 };