SDL_FreeSurface (3) - Linux Manuals
SDL_FreeSurface: Frees (deletes) a SDL_Surface
NAME
SDL_FreeSurface - Frees (deletes) a SDL_SurfaceSYNOPSIS
#include "SDL.h"
void SDL_FreeSurface(SDL_Surface *surface);
DESCRIPTION
Frees the resources used by a previously created SDL_Surface. If the surface was created using SDL_CreateRGBSurfaceFrom then the pixel data is not freed.
SEE ALSO
SDL_CreateRGBSurface SDL_CreateRGBSurfaceFrom