rem: static const char* get_track_playlist(int n, int argc, char *argv[])
add: static const char* get_track_playlist(int n)
context: static const char* get_track_playlist(int n, int argc, char *argv[]){  const char *res = NULL;  char *path;  FILE *f1;  assert(n > 0);  path = get_playlist_path();  if (path == NULL) {    return path;  }  f1 = fopen(path, "rb");  if (f1 != NULL) {    int c, w, cur_item = 1;    /* iterate through all data octet at a time */    for(w = 0;;) {      c = fgetc(f1);      if (c == EOF) 	break;      if (cur_item == n) {	if (c == '\n') {      	  ecaplay_next[w] = 0;	  res = ecaplay_next;	  break;	}      	else {	  ecaplay_next[w] = c;	}	++w;      }      if (c == '\n') {	++cur_item;      }    }    /* close the file and return results */    fclose(f1);  }  free(path);    return res;}