304 get_key(gd_GIF *gif, int key_size, uint8_t *sub_len, uint8_t *shift, uint8_t *byte)  in get_key()  argument
320             f_gif_read(gif, byte, 1);  in get_key()
324         key |= ((uint16_t) ((*byte) >> rpad)) << bits_read;  in get_key()
338     uint8_t sub_len, shift, byte;  in read_image_data()  local
357     f_gif_read(gif, &byte, 1);  in read_image_data()
358     key_size = (int) byte;  in read_image_data()
430         key = get_key(gif, curr_size, &sub_len, &shift, &byte);  in read_image_data()
551     uint8_t sub_len, shift, byte;  in read_image_data()  local
560     f_gif_read(gif, &byte, 1);  in read_image_data()
561     key_size = (int) byte;  in read_image_data()
572     key = get_key(gif, key_size, &sub_len, &shift, &byte); /* clear code */  in read_image_data()
593         key = get_key(gif, key_size, &sub_len, &shift, &byte);  in read_image_data()