ftplib::Pwd - useless postincrement causes unwanted warning

[Fojtik]

*
 * FtpPwd - get working directory at remote
 *
 * return 1 if successful, 0 otherwise
 */
int ftplib::Pwd(char *path, int max)
{
  int l = max;
  char *b = path;
  char *s;

   if (!FtpSendCmd("PWD",'2',mp_ftphandle)) return 0;
  s = strchr(mp_ftphandle->response, '"');
  if (s == NULL) return 0;
   s++;
  while ((--l) && (*s) && (*s != '"')) *b++ = *s++;
  *b++ = '\0';  // !!!! This causes a warning
  return 1;
}

Proposed fix:

*
 * FtpPwd - get working directory at remote
 *
 * return 1 if successful, 0 otherwise
 */
int ftplib::Pwd(char *path, int max)
{
  int l = max;
  char *b = path;
  char *s;

   if (!FtpSendCmd("PWD",'2',mp_ftphandle)) return 0;
  s = strchr(mp_ftphandle->response, '"');
  if (s == NULL) return 0;
   s++;
  while ((--l) && (*s) && (*s != '"')) *b++ = *s++;
  *b = '\0';
  return 1;
}