[SDL] small copy-paste bug in SDL_audio.h

[Roman Kyrylych]

Hi!

This code in branches/SDL-ryan-multiple-audio-device/include/SDL_audio.h
has copy-paste bug:

/* These functions return the list of built in video drivers, in the
 * order that they are normally initialized by default.
 */
extern DECLSPEC int SDLCALL SDL_GetNumAudioDrivers(void);
extern DECLSPEC const char *SDLCALL SDL_GetAudioDriver(int index);

Should be audio instead of video, I suppose. ;-)

-- 
Roman Kyrylych (Роман Кирилич)