[Toybox] [Patch] - bug in lib function lskip()

[Ashwini Sharma]

Hi Rob, List,

In function __lskip()__

 or = readall(fd, libbuf, try);
     if (or < 0) perror_exit("lskip to %lld", (long long)offset);
-    else offset -= try;
+    else offset -= or;
     if (or < try) break;

offset is decremented by __try__ amount, whereas it should be decremented
by the actual amount read, i.e. __or__.

Attached is the patch.

regards,
Ashwini
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