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getsnarfn: sync with legacy

--- a/wsys.c

+++ b/wsys.c

@@ -104,13 +104,12 @@

 	i = 0;

 	seek(snarffd, 0, 0);

 	while((n = read(snarffd, buf, sizeof(buf))) > 0){

-		s = erealloc(s, i+n+1);	// an extra byte for the terminating zero

+		s = erealloc(s, i+n+1);

 		memmove(s+i, buf, n);

 		i += n;

 	}

 	s[i] = 0;

-	i++;

-	*pnb = i;

+	*pnb = i+1;	// with the terminating zero

 	return s;

 }

-- 

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