argv flattening

gistfile1.c

static char *create_argv_buffer(int argc, char *argv[]) {
	size_t s,c = 0;
	char *p;
	
	FILE *r = open_memstream(&p, &s);
	
	if(r==NULL) {
		p=NULL;
		return p;
	}

	while(++c<argc) {
		fputs(argv[c], r);
		putc(' ', r);
	}

	putc('\0', r);fclose(r);
	return p;
};