Ticket #47835 - Coverity: 12687..12692
Description: arg_max has to be always set. But introduced by
commit 0a546bcb3d4625d6db1dcbb342922b4ddb3bee37
Description: To solve "Passing string argv[0] of unknown size to
slapi_ch_strdup, which expects a string of a particular size", get
ARG_MAX and pass it to slapi_ch_strndup.