stralloc_chomp - remove trailing CR, LF or CRLF

       stralloc_chomp removes trailing CRLF, CR or LF from sa and returns the number of removed characters (i.e.
       0, 1 or 2).

       stralloc_chomp - remove trailing CR, LF or CRLF

       number of removed characters (0, 1, or 2).

stralloc_chop(3)

                                                                                               stralloc_chomp(3)

#include<libowfat/stralloc.h>

       int stralloc_chomp(stralloc* sa);