modules/mappers/mod_negotiation.c:467: error: UNINITIALIZED_VALUE
  The value read from end was never initialized.

modules/mappers/mod_negotiation.c:467:16: 
465. 
466.         *cp++ = '\0';           /* Delimit var */
467.         while (apr_isspace(*cp) || *cp == '=') {
                    ^
468.             ++cp;
469.         }
