directfb: Fixed compiler warnings about undefined functions.

src/video/directfb/SDL_DirectFB_mouse.c

@@ -36,10 +36,8 @@ static SDL_Cursor *DirectFB_CreateDefaultCursor(void);
 static SDL_Cursor *DirectFB_CreateCursor(SDL_Surface * surface,
                                          int hot_x, int hot_y);
 static int DirectFB_ShowCursor(SDL_Cursor * cursor);
-static void DirectFB_MoveCursor(SDL_Cursor * cursor);
 static void DirectFB_FreeCursor(SDL_Cursor * cursor);
 static void DirectFB_WarpMouse(SDL_Window * window, int x, int y);
-static void DirectFB_FreeMouse(SDL_Mouse * mouse);
 
 static const char *arrow[] = {
     /* pixels */
@@ -248,8 +246,10 @@ DirectFB_WarpMouse(SDL_Window * window, int x, int y)
 
 #if USE_MULTI_API
 
+static void DirectFB_MoveCursor(SDL_Cursor * cursor);
 static void DirectFB_WarpMouse(SDL_Mouse * mouse, SDL_Window * window,
                                int x, int y);
+static void DirectFB_FreeMouse(SDL_Mouse * mouse);
 
 static int id_mask;