Changes to wxWidgets/SDL2 port :

- Updated UI
- OpenGL 3.0 with GLSL/GLSLP-support
- Improvements to Windows version
- Minor changes/bugfixes
Patch from bit.

src/pc.c

@@ -192,6 +192,8 @@ void onesec()
 {
         fps=framecount;
         framecount=0;
+        video_refresh_rate = video_frames;
+        video_frames = 0;
         win_title_update=1;
 }