Variables starting with `c' in src/gui-sdl

• clicked src/gui-sdl/dlgAlert.c:35
• cpu_clock src/gui-sdl/dlgSystem.c:31
• cpu_type src/gui-sdl/dlgSystem.c:30
• current_object src/gui-sdl/sdlgui.c:27
• custom_memory src/gui-sdl/dlgAdvanced.c:50
• custom_memsize src/gui-sdl/dlgMemory.c:41