ref: efbc81f6f60f7e0e25e6e7055873f1a30359b3b1
dir: /libc/runestrdup.c/
#include <u.h>
#include <libc.h>
Rune*
runestrdup(Rune *s) 
{  
	Rune *ns;
	ns = malloc(sizeof(Rune)*(runestrlen(s) + 1));
	if(ns == 0)
		return 0;
	return runestrcpy(ns, s);
}