Memory corruption if readByte() is called when not data available

[GoogleCodeExporter]

What steps will reproduce the problem?
1. call readByte() when no data is available

What version of the product are you using? On what operating system?
1.5.0

Please provide any additional information below.

FREObject getByte(FREContext ctx, void* funcData, uint32_t argc, FREObject 
argv[])
{
  FREObject result;

  pthread_mutex_lock( &safety);
    FRENewObjectFromUint32(buffer[0], &result);

        memcpy(buffer,buffer+1,bufferSize-1);
        bufferSize--;
    if (bufferSize == 0)
      {
        sentEvent = 0;
      }
  pthread_mutex_unlock( &safety);

  return result;
}

No check for bufferSize>0 before decrement.
buffersize became nagative. 
Incoming bytes corrupt ptrToThread variable.
On AS3 side, __bytesAvailable became negative.

Original issue reported on code.google.com by romanlut...@gmail.com on 11 Apr 2015 at 12:47

[GoogleCodeExporter]

This project has been moved to GitHub by Google Code.  
https://github.com/quetwo/as3-arduino-connector  Would you mind submitting a 
pull request there to correct these issues?  I would love to include them in a 
new release.

Original comment by Nicholas...@gmail.com on 14 Apr 2015 at 10:02