overlapped read fix

[Mike McCormack]

Hi,

vbterm expected that ReadFile would not do an overlapped read when it
knew there was data in the read buffer, so threw a run time error.
This patch allows ReadFile with an overlapped parameter to read data
immediately if it is available.

Mike

ChangeLog:
  Read data immediately in overlapped ReadFile if possible.



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mailto:Mike_McCormack at start.com.au
ph +82 16 430 0425

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