stralloc_zero - set length of stralloc to 0

       stralloc_zero sets the length of the stralloc to 0.

       stralloc_zero - set length of stralloc to 0

       none.

stralloc_copys(3)

                                                                                                stralloc_zero(3)

#include<libowfat/stralloc.h>

       void stralloc_zero(stralloc* sa);