ref: 72a168b5fb1d3b40bf6c8051d06d7237f27a7d2b
dir: /sys/src/libString/s_unique.c/
#include <u.h>
#include <libc.h>
#include "String.h"
String*
s_unique(String *s)
{
String *p;
if(s->ref > 1){
p = s;
s = s_clone(p);
s_free(p);
}
return s;
}