stralloc_diffs - compare two strallocs

       stralloc_diff returns negative, 0, or positive, depending on whether a is lexicographically smaller than,
       equal to, or greater than the string b.

       stralloc_diffs - compare two strallocs

       <0 if a<b, 0 if a==b, >0 if a>b.

stralloc_diffs(3), stralloc_starts(3)

                                                                                               stralloc_diffs(3)

#include<libowfat/stralloc.h>

       int stralloc_diff(const stralloc* a,const stralloc* b);