[RFA] Fix memory leak in gdbserver/hostio.c

[Michael Snyder]

Pedro Alves wrote:
> On Sunday 27 February 2011 00:30:38, Michael Snyder wrote:
>> Found by coverity.
> 
> Do you try running coverity on your patches?
> 
>> @@ -367,6 +367,7 @@ handle_pwrite (char *own_buf, int packet
>>        || require_data (p, packet_len - (p - own_buf), &data, &len))
>>      {
>>        hostio_packet_error (own_buf);
>> +      free (data);
>>        return;
>>      }
> 
> This is wrong.  If any predicate other than require_data in if above
> returned true, then you'll be freeing a garbage pointer.  I'd
> fix this in require_data ... just free the output buffer when
> returning error, so the callers never have to.

Like this?

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