modules/mappers/mod_negotiation.c:466: error: UNINITIALIZED_VALUE
  The value read from *end was never initialized.

modules/mappers/mod_negotiation.c:466:24: 
464. 
465.         *cp++ = '\0';           /* Delimit var */
466.         while (*cp && (apr_isspace(*cp) || *cp == '=')) {
                            ^
467.             ++cp;
468.         }
